redmi-note-9t-review:-strengths-and-struggles

Redmi Note 9T review: Strengths and struggles

(Pocket-lint) – Each year Xiaomi’s Redmi offshoot – known for its budget phones – updates its latest and greatest with a mid-cycle ‘T’ variant, adding a little more to proceedings. In the case of the Redmi Note 9T the goal was to step beyond the already impressive Note 9 – which we found to be a stellar affordable 5G phone.

Problem is, things don’t always go entirely to plan. When we first received the Note 9T it had a software version that we couldn’t then get to update after moving into the phone – which caused umpteen issues with disappearing apps, inability to Cast, intermittent Bluetooth connections, payment verification problems, and more.

But, fear not, it was resolvable. A hard reset later and after installing all relevant apps manually from the Google Play Store, the Redmi Note 9T – on MIUI version 12.0.4 – ironed out the most pertinent of those highlighted problems. But was that initial dark cloud a sign of what was to come, or has our week-long experience using the Note 9T been all sunny skies?

Design & Display

  • Finishes: Nightfall Black, Daybreak Purple
  • Build: Glass front panel, plastic rear & frame
  • Dimensions: 161.2 x 77.3 x 9.1mm / Weight: 199g
  • Side-positioned fingerprint scanner (in power button)
  • Display: 6.53-inch LCD, 1080 x 2340 resolution, 19.5:9 aspect ratio 

It’s all too easy to forget that the Redmi Note 9T is a fairly budget phone. Because, ultimately, it doesn’t look like one. Xiaomi does a decent job in hiding away any real telling signs. No, you don’t get the premium glass rear or other flashy colours as you might further up various ranges, but that’s hardly a concern for a device that isn’t pretending to be a flagship.

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Dressed in its ‘Nightfall Black’ finish here, the Redmi Note 9T is more than befitting of its price point. That plastic rear has a subtle texture that helps to hide fingerprinting, while the protruding circular camera unit – well, ‘designated area’ really, as the top and bottom of the actual protrusion are squared-off absentees – makes the rear panel look altogether more like a case (it’s not, though, as it’s not removable – and, no, don’t try and pull it really hard).

The 6.53-inch screen is the kind of scale that’s very current, delivering decent resolution too. Typically around this price point there’s a fall-out from Full HD to a lower density – look at the Moto G9 Power, for example – but the Redmi holds onto that Full HD+ resolution across its well-proportioned 19.5:9 aspect ratio panel. That’s as sharp as you need.

It’s not the very brightest or most colour-popping LCD panel ever, but you’d never notice that in isolation (as we have a Samsung Galaxy Note 20 Ultra running in tandem, however, it’s clear as day – but the Samsung is more than four times the price). Initially we had issues with the 9T’s auto-dimming being overzealous, which is particularly notable when ambient light is low. It’s a long-time issue for the series – and one that Motorola used to have, but since fixed – that we hope Xiaomi’s software will address in the future.

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Rather than opting for an under-display fingerprint scanner sign-in method, the Note 9T has a side-positioned fingerprint scanner, which doubles-up as the power button. While this position has never been our favourite – largely because Android apps now present a massive ‘press here’-style fingerprint on the screen itself, so you’ll typically want to press the screen – it’s largely effective in this setup, responsive the majority of the time, and easy to reach.

Performance & Battery

  • MediaTek Dimensity 800U processor, 4GB RAM
  • 64GB storage (128GB optional), microSD slot
  • 5,000mAh battery, 18W fast-charging
  • MIUI 12 software
  • 5G connectivity

Performance is a game of two halves though. That’s the one thing that gets us about the Redmi Note 9T. It always feels as though there’s some jostling between software – battery optimisations and specific permissions, for example – and the hardware on offer. Because MediaTek’s Dimensity 800 is no slouch – it’s a decent enough chipset designed to bring 5G connectivity to a wider audience.

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But the whole package doesn’t always play ball. There’s a lot of tinkering that you’ll need to do with this Redmi to get the most out of it. Whether that’s ensuring per-app permissions are setup to allow, say, Strava to keep tracking – it’s still hit-and-miss anyway – or for the vibration to just dang well stop (it’s on by default in silent mode, which is bananas if you ask us; plus there’s a separate treatment for touch vibration feedback hidden elsewhere in the menus), there’s a sense that Xiaomi’s MIUI software still isn’t quite simple and easy enough.

That was even telling after our first install, with version 12.0.1 fired up, and the numerous issues we had, as mentioned up top in this review. It goes to show just how incredibly important a smooth software experience is – and that’s what we’ve been saying these Redmi devices haven’t quite handled perfectly to date (Xiaomi’s Mi 10T Pro felt like a step down from the 9T Pro to us too). But if you’re OK with knowing what you’re getting then it’s not a big issue, per se, it’s just that competitors like Motorola do better by comparison – if you’re alright with getting a less powerful device for about the same cash, anyway.

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But back to Redmi. The Note 9T has the guts inside to handle a variety of tasks, including gaming. But there are still bugs, especially when it comes to graphics. In South Park Phone Destroyer – yes, we’re a bit obsessed, it’s our standard benchmark for any mobile device review as a result – top layer graphics (i.e. the cards you play in the game) won’t display. Which is a massive problem that means the game is close to unplayable – we’ve only been able to continue on another device. Nothing to do with smoothness or frame-rate – that stuff’s all fine – just an experience with how this hardware and software combination doesn’t quite succeed.

However, get everything arranged as you like – there’s an app drawer or full screen icons options – and the experience is amenable. And it’ll last for a long time – as the 5,000mAh battery on board helps things last an age. We’ve been getting only about half way through the charge over the course of a single day, so two-day life really isn’t out of the question.

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Software plays a major part in that longevity though. And it’s why you’ll need to tell certain apps through background settings that they’re allowed to run at all times, self launch, and do as they please. Which is rather reflective of the Redmi Note 9T experience.

Cameras

  • Triple rear camera system:
    • Main (26mm equivalent): 48-megapixel, 0.8µm pixel size, f/1.8 aperture
    • Macro: 2MP, f/2.4 / Depth: 2MP, f/2.4
  • Single punch-hole selfie camera (29mm equiv.)

    • 13-megapixel, 1.12µm pixel size, f/2.3 aperture

Last up is the camera arrangement. It’s a triple rear unit – we know it looks like a quad arrangement, but the fourth is the LED light/flash – that, well, only really contains one camera of much use.

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As is typical with budget phones these days there’s the sense that “more equals better”. We don’t think so, though, as it just makes for a more cumbersome looking rear unit, with the 2-megapixel macro and 2-megapixel depth sensors most likely never going to be used at all.

Which leaves the main 48-megapixel sensor to do the hard work. It uses pixel binning – that being it combines four into one – to squeeze more colour and detail out of a scene, rendering frames as 12-megapixels by default. But that’s still huge – it’s like a 4K TV with yet another half-a-4K-TV all pressed into the one image. So scale is no issue whatsoever.

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What’s more trying are certain shooting conditions. We got some decent shots in the late evening, with colours still popping nicely considering the lack of light. But there’s some visible grain that detracts from the detail.

The Note 9T’s main camera is perfectly good enough for a phone – results are even better in daylight – and it fits the bill of what to expect here. Just don’t forget to turn off the default watermark otherwise you’ll want to punch yourself after seeing it plastered over every image (why oh why it’s even an option we have no idea).

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To the front is a punch-hole selfie camera, which cuts a circular opening through the screen. It’s a little large and almost casts a shadow onto content sometimes, which is odd, but it’s all par for the course these days. It’s 13-megapixels and can deliver selfies with usable results.

Overall, the Note 9T sounds like it’s got a grand selection of cameras, but it’s an oversell. Disregard the ‘triple’ on the rear – and it’s a bit of a shame there’s no ultra-wide to be found – and it’s got a workable main and selfie camera combination.

Verdict

The Redmi Note 9T represents great value for money. It’s got a big screen with ample resolution, it doesn’t look or feel like a budget phone – yet affordability is very much its key strength.

So what’s the catch? Well, there’s a bit of push and pull with the software. To get the most out of this phone you’ll need to tinker a bit to get some apps to function to their fullest. And while we’ve experienced some typical issues – excessive screen dimming on the software side, the cameras being an oversell on the hardware side – there’s also been some unexpected oddities, such as particular graphics not loading within games.

Given the context of its asking price, however, the Redmi Note 9T is a capable device that will deliver more core power and features than, say, a comparable Motorola device. But we feel there’s so much more just beneath the surface that’s desperate to get out.

Also consider

Pocket-lint

Moto G 5G Plus

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It’s a spot more cash, but Moto’s software experience is just that much better out of the box. It suffers some similar hardware issues to the Redmi – the cameras being an oversell, there’s no under-display fingerprint scanner – but, for us, the user experience here is just a cut above.

  • Read our review
Pocket-lint

Redmi Note 9

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Xiaomi is offering massive discounts on the already affordable ‘non-T’ version of the Redmi Note 9. If you can find it for a sub-£/€200 price point then it’s a no-brainer choice, even over the 9T!

  • Read our review

Writing by Mike Lowe.

best-raspberry-pi-accessories-of-2021

Best Raspberry Pi Accessories of 2021

(Image credit: Amazon)

Raspberry Pi Models, Tutorials and More

You can purchase a Raspberry Pi for as little as $5 (for the Raspberry Pi Zero) or more likely $35 (for the Raspberry Pi 4), but you’ll need a few extra products to make it run. And, beyond that, there’s a whole world of accessories that help you make the most of your Pi. 

As with any computer, on the Raspberry Pi, you’ll need a way to enter data and a way to see the interface, which usually means getting a keyboard, a mouse and a monitor. .However, you can opt for a headless Raspberry Pi install, which allows you to remote control the Pi from your PC. In that case, the minimum requirements are:

  • microSD card of at least 8GB, but the best Raspberry Pi microSD cards have 32GB or more. When you first set up a Raspberry Pi, you need to “burn” the OS onto it by using a PC, another Raspberry Pi or even a phone with microSD card reader.
  • Power supply: For the Raspberry Pi 4, you need a USB-C power source that provides at least 3 amps / 5 volts, but for other Raspberry Pis, you need a micro USB connection that offers at least 2.5 amps and the same 5 volts.

In addition, there are a number of accessory and add-on types that protect your Pi, add new features and make everything a lot more useful and fun. These include:

  • Cases: The best Raspberry Pi cases give you style, functionality and durability.
  • HATs (aka add-on boards): The best Raspberry Pi HATs let you do everything from adding motors to creating LED light shows.
  • Breakout Boards: To breakout the GPIO for easier access or to use via a breadboard. Essential for the new Raspberry Pi 400.
  • Camera Modules: The Raspberry Pi has its own special camera port and there’s a whole ecosystem of compatible camera modules for it.
  • Cooling: Raspberry Pi 4 models in particular can get hot so fans and heatsinks help.
  • Electronic parts: You can make great projects and have a lot of fun with motors, sensors, transistors and other bits and bobs.

Overall, these are the best Raspberry Pi accessories. No matter what your needs or project, you’ll definitely need some of these. 

The Best Raspberry Pi Accessories You Can Buy Today

(Image credit: Tom’s Hardware)

1. Argon Neo Case

Best Raspberry Pi Case

Attractive aluminum design

Easy access to GPIO pins

Passive cooling

Sliding magnetic cover

Must remove cover to get to pins

The top overall choice on our round-up of the best Raspberry Pi Cases, the Argon Neo combines great looks with plenty of flexibility and competent passive cooling. This mostly-aluminum (bottom is plastic) case for the Raspberry Pi 4 features a magnetic cover that slides off to provide access to the GPIO pins with enough clearance to attach a HAT, along with the ability to connect cables to the camera and display ports. The microSD card slot, USB and micro HDMI out ports are easy to access at all times. 

With the cover on or off, the Argon Neo provides solid passive cooling capability as an included thermal pad connects the Raspberry Pi 4’s CPU to an aluminum plate to dissipate heat. You can also attach an optional fan HAT for active cooling. At just $15, this case is extremely affordable but cuts no corners.

(Image credit: Tom’s Hardware)

2. Raspberry Pi High Quality Camera

Best Raspberry Pi Camera

Great image quality

Interchangeable Lenses

Tripod mountable

Expensive

Doesn’t come with lens

It doesn’t come cheap, but the official Raspberry Pi High Quality camera offers the best image quality of any Pi camera by far, along with the ability to mount it on a tripod. The 12-MP camera doesn’t come with a lens, but supports any C or CS lens, which means you can choose from an entire ecosystem of lenses, with prices ranging from $16 up to $50 or more and a variety of focal lengths and F-stop settings.

The Raspberry Pi High Quality camera plugs into the same CSI port on the Raspberry Pi as any other Pi camera module, but unlike the others, this one has a ¼ inch screw hole that allows you to attach it to any standard tripod or camera mount. If you care about image quality, the Raspberry Pi High Quality Camera is a must-have.

Read: Raspberry Pi High Quality Camera review

(Image credit: Tom’s Hardware)

3. Raspberry Pi Camera Module V2

Best Affordable Raspberry Pi Camera

Good image quality

Affordable price

No tripod mounting

If you need a Raspberry Pi camera, but don’t want to spend more than $50 on the high quality module and then have to bring your own lens, the official Raspberry Pi Camera Module V2 is the one to get. This 8-MP camera uses a Sony IMX219 sensor that gives it really solid image quality, records video at up 1080p, 30 fps  and is a big improvement over the 5-MP OmniVision OV5647 that was in the V1 camera.

There are a number of third-party Raspberry Pi camera modules on the market, with some costing around $10 or less. However, most of these use the older, OV5647 sensor which provides far worse image quality.

(Image credit: Tom’s Hardware)

4. Lenovo ThinkPad TrackPoint Keyboard II

Best Keyboard for Raspberry Pi

Best-in-class typing experience

Trackpoint for navigation

Both 2.4 GHz and Bluetooth wireless

Long battery life

Expensive

Whether you want to control your Raspberry Pi from the couch or you have it on a table and don’t want to waste space, getting one of the best wireless keyboards is a good idea. It’s particularly helpful to have a wireless keyboard with a pointing device so you don’t need to also drag around a mouse.

Lenovo’s ThinkPad TrackPoint Keyboard II is the best keyboard for Raspberry Pi thanks to its excellent key feel, multiple connectivity options and built-in TrackPoint pointing stick. The keyboard looks and types just like those on Lenovo’s ThinkPad line of business laptops, offering plenty of tactile feedback and a deep (for a non-mechanical), 1.8mm of key travel. The TrackPoint pointing stick sits between the G and H keys, allowing you to navigate around the Raspberry Pi’s desktop, without even lifting your hands off of the home row. 

The Thinkpad TrackPoint II has both 2.4-GHz (via a dongle) and Bluetooth connectivity which  you can toggle between using a hardware switch. So, if you have two Raspberry Pis or one Pi and one PC, you can switch back and forth with ease. Charging via USB-C, the keyboard promises up to two months of battery life on a charge.

Read: Lenovo ThinkPad TrackPoint Keyboard II review

(Image credit: Amazon)

Raspberry Pi 4 Official Power Supply

Best Raspberry Pi Power Supply

Provides just the right amount of power

Built for Pi

No on/off switch

Not the cheapest option

If you’re going to use a Raspberry Pi 4, you need a USB-C power supply that offers at least 3 amps of juice with a roughly 5-volt output. We’ve found that the best USB-C laptop chargers are capable of delivering this kind of power (albeit often with 4.8 – 4.9 volts, which still works), but if you don’t have a powerful charger handy or need one just for your Pi, the official Raspberry Pi power supply is your best choice.

Rated for 5.1 volts and 3 amps, the official Raspberry Pi 4 power supply has good build quality and a nice design. Available in black or white, it’s a small rectangle, emblazoned with the Raspberry Pi logo and a strong, built-in Type-C cable that’s 59 inches (1.5m) long. Unlike some third-party competitors, it doesn’t come with an on / off switch, but it is compatible with cheap on / off adapters you can attach to the end. You may find competitors for a few dollars less, but the official Raspberry Pi 4 power supply is a sure thing.

If you are shopping for any other Raspberry Pi, including the Raspberry Pi Zero or Raspberry Pi 3 or below, you’ll need a power supply that outputs to a micro-USB port and only requires 2.5 amps and 5 volts. There’s also an official Raspberry Pi charger for these older models.

(Image credit: Amazon)

6. Pimoroni Explorer HAT Pro

Best Raspberry Pi HAT

Analog to digital conversion

Motor controller

LED lights

Built-in breadboard

No pass-thru for other HATs

The Raspberry Pi’s 40 GPIO pins are arguably its most important feature. Using these pins (see our GPIO pinout), you can attach an entire universe of electronics, including motors, sensors and lights. There’s a huge ecosystem of add-on boards, appropriately called HATs (hardware attached on top) that plug directly into the GPIO pins and matching the same layout as the Pi. These add on boards give you all kinds of added functionality, from LED light matrixes to touch screens and motor controllers for robotics projects. 

Sitting at the very top of our list of Best Raspberry Pi HATs, each of which has a different purpose, the Pimoroni Explorer HAT Pro provides a smorgasbord of features that you can use in a wide variety of projects. While the Raspberry Pi doesn’t come with an analog to digital converter like Arduino does (see Raspberry Pi vs Arduino), the Explorer HAT Pro provides four ADCs you can use with joysticks or potentiometers. It also packs two motor controllers, four colorful LED lights, four touch pads and four crocodile clips for attaching other electronics. Oh and it comes with a small breadboard you can stick on top and use for mounting and wiring electronics. Every serious Raspberry Pi fan should have one of these on hand.

(Image credit: Amazon)

7. Pimoroni Fan Shim

Best Cooling for Raspberry Pi

Great cooling

HATs go on top of it

Expensive in the US

If you’re using a Raspberry Pi 4, you definitely need some kind of cooling, whether it’s a heat sink, an aluminum with passive cooling built in or, best of all, a fan. The Pimoroni Fan Shim is powerful, easy-to-install and unobtrusive. You just push it down onto the left most side of your GPIO pin header and it does a fantastic job of cooling your Pi. You can even use a Pimoroni Fan Shim on a Raspberry Pi 4 that’s been overclocked all the way to 2.1 GHz, without seeing any throttling.

You can just let the Fan Shim run all the time or you can download Pimoroni’s software, which allows you to set temperature thresholds for it.

Read: Pimoroni Heatsink and Fan Shim Tested

(Image credit: Silicon Power)

8. Silicon Power 32GB 3D NAND microSD Card

Best Raspberry Pi microSD Card

Inexpensive

Leading performance

White surface you can write on

Slow boot times

Unless you’ve specifically configured yours to boot from an SSD (see our article on How to Boot Raspberry Pi from USB), every Raspberry Pi uses a microSD card as its primary storage drive. We maintain a list of the Best microSD cards for Raspberry Pi and have chosen the 32GB Silicon Power 3D NAND card as the top choice.

Unless you’re hosting a media server or have a ridiculous amount of ROMS on a game emulator, a 32GB microSD card provides more than enough storage for Raspberry Pi OS and a ton of applications. The operating system and preloaded applications take up far less than 8GB by themselves.

In our tests, the Silicon Power 3D NAND microSD card had the fastest application open times and the best combination of random reads and writes. Considering that it’s also less expensive than most 32GB cards and that its white surface provides a little room for you to write on it (with marker), this is currently the best card around. 

(Image credit: Amazon)

9. GPIO Reference Board

Helpful Accessory

Helpful reference

Cheap

You can look this up online

Each of the Raspberry Pi’s 40 GPIO pins has a different function so it’s hard to keep track of which does what. For example, some of the pins provide I2C communication while others offer power and others are just for grounding. You can look at a GPIO pinout guide such as ours, but sometimes it’s just easier to put the list of functions right on top of the pins.

GPIO reference boards are tiny, non-electronic headers that you place on top of the pins to show you which one has which name. There are many different brands and models for sale and all do pretty much the same thing so there’s no need to be picky about which one you buy. Most have small holes on top that you can use to hang them on a keychain and take them wherever you go.

(Image credit: Amazon)

10. micro HDMI to HDMI Adapters

Must-Have for Pi 4

Very helpful and work well 

 You still need an HDMI cable 

While most of the earlier Raspberry Pi models have a single, full-size HDMI port, the Raspberry Pi 4 has dual micro HDMI ports that can each output to a monitor at up to 4K resolution. While there’s a good chance you already have one or more HDMI cables lying around the house, most of us don’t have micro HDMI cables, because it’s a rarely used connector.

To connect the Raspberry Pi 4 to a screen, you’ll either need a micro HDMI to HDMI cable or a micro HDMI to HDMI adapter you can connect an existing cable to. Cable Matters, a well-known and reputable brand, sells a pair of such adapters for just $10. That’s much cheaper than a single micro HDMI to HDMI cable, which goes for $8 to 10 for just one. I’ve been using these Cable Matters adapters for more than a year now and they’ve worked really well.

(Image credit: Amazon)

11. Electronics Kit with Breadboard, Wires

Great for learning

Helpful for prototyping

No soldering necessary

You can use your Raspberry Pi as a game emulator, a server or a desktop PC, but the real fun begins when you start connecting electronics to its GPIO pins. Of course, to even get started playing with GPIO connectors, you need some interesting things to connect to them such as lights, sensors and resistors.

The market is filled with electronics kits that come with a slew of LED lights, resistors, jumper cables, buttons and other bits and bobs you need to get started. Most importantly, all of these kits come with at least one breadboard, a white plastic surface filled with holes you can use to route and test circuits, no soldering required. 

There are plenty of good kits from no-name brands on Amazon, but the Freenove LCD 1602 Starter kit caught our eye, because it comes with an ADC chip for analog-to-digital conversion, an LCD text screen and a GPIO extension board you can use to route all your pins over to the breadboard at once.

(Image credit: Amazon)

12. USB 3 microSD Card Reader

Need it to read and write

PC with USB port quired 

In order to write Raspberry Pi OS (or a different OS) to a microSD card, you’ll need some kind of microSD card reader that you can attach to your PC. Just about any make or model will do as long as it reads SDHC and SDXC cards and, preferably, connects via USB 3.0. I’ve been using the Jahovans X USB 3.0 card reader, which currently goes for $5.99, for almost a year now and it has worked really well.

You can also attach a microSD card reader to your Pi and use it to create a disk image backup of your Raspberry Pi

(Image credit: Tom’s Hardware)

13. Raspberry Pi Zero Official Case

Best Case for Raspberry Pi Zero

GPIO Access

Camera Access

Official Pi design

Can’t have both GPIO and Camera at once

We’re not huge fans of the Official Raspberry Pi 4 case, because it covers the GPIO pins and camera slots. However, the Official Raspberry Pi Zero case is a completely different as it comes with three different covers: one which has a camera hole (so you can make a Raspberry Pi body camera), another which exposes the GPIO pins and a third which covers the whole thing.  The official Raspberry Pi Zero case also has the official burgundy and white colors of the Raspberry Pi Foundation.