[Kazuhisa Nishikawa’s Irregular Column]10.4-inch Android 12 tablet with LTE/phone calls! “Teclast T40 Pro”-PC Watch

[Kazuhisa Nishikawa’s Irregular Column]10.4-inch Android 12 tablet with LTE/phone calls! “Teclast T40 Pro”-PC Watch
[Kazuhisa Nishikawa’s Irregular Column]10.4-inch Android 12 tablet with LTE/phone calls! “Teclast T40 Pro”-PC Watch

I introduced Teclast’s 11-inch tablet “T50” a while ago, but the editorial department sent me the “T40 Pro”, which corresponds to its lower model, so I would like to deliver a trial report.

10.4 type with Android 12 and compatible with LTE / calls!

In October last year (2022), we introduced the “Teclast T50”, a slightly unusual tablet that supports calls with the company’s 11-inch.

This time, the Teclast “T40 Pro”, which corresponds to this lower model, will be introduced. The big difference is the 10.4-inch panel size and Unisoc T616 SoC (T618 for T50). Memory and storage are the same. Of course, it also supports LTE / calls. In other words, it is a form that scales down the T50 almost as it is. The main specifications are as follows.

Specifications of Teclast “T40 Pro”
SoCs Unisoc T616 (x2 Cortex-A75 + 6x Cortex-A55/8 cores) with Mali-G57
memory 8GB/LPDDR4
storage 128GB
OS Android 12
display 10.4-inch IPS type (2,000 x 1,200 dots). Maximum brightness 350cd/m2
network Wi-Fi/802.11ac, Bluetooth 5.0, Dual 4G/VoLTE compatible (Nano SIM x 2)
Supported band TD-LTE: B38/B39/B40/B41
FDD-LTE: B1/B3/B5/B7/B8/B20
WCDMA: B1/B2/B5/B8
TD-SCDMA: B34/B39
GSM: B2/B3/B5/B8
interface USB Type-C, microSD card slot (up to 1TB), speaker x 4, microphone
sensor light sensor, proximity sensor
GPS BDS, GPS, GLONASS, GALILEO, A-GPS
camera Front: 8 million pixels / Rear: 13 million pixels (AF)
Battery Supports 7,000mAh/18W USB PD fast charging
size/weight Approximately 248 x 167 x 9.2mm (width x depth x height)/480g
accessories USB Type-C/Type-C cable, AC adapter (20W)
price 33,900 yen

SoC is Unisoc T616. It has 8 cores of Cortex-A75 × 2 + Cortex-A55 × 6, and the GPU contains Mali-G57. Compared to the T618 with the T50, the core configuration is the same, but the clock is slightly lower at 1.95GHz + 1.82GHz vs 2.0GHz + 2.0GHz, and the GPU is Mali-G57/750MHz vs Mali-G52/850MHz. Overall, the T616 has lower performance. Also, the company’s product page says that the clock is 2.0 GHz, but as far as I checked the SoC specifications on the net, it seems to be a mistake (probably mixed with T618).

Memory is 8GB / LPDDR4, storage is 128GB. The OS adopts Android 12. Enough content for this class.

The display is a 10.4-inch IPS type (2,000 x 1,200 dots). Like the N-one “NPad Plus” introduced a while ago, the aspect ratio of 16:10 is almost 16:10, which is less than 50 dots. Maximum brightness 350cd/m2.

The network supports Wi-Fi / 802.11ac, Bluetooth 5.0, and Dual 4G (Nano SIM x 2) / VoLTE. In other words, it is a tablet that can also make calls. It’s difficult to hold in one hand due to its size, but it can be used like a speakerphone on a desktop. Please refer to the table for compatible bands. Of course, it is technically compliant, so there is no problem in using it in Japan. However, it does not support all major bands, so be careful depending on the carrier.

The interface is USB Type-C, microSD card slot (up to 1 TB), speaker x 4, microphone. When I checked the USB Type-C, it was not compatible with video output. The camera has 8 million pixels on the front and 13 million pixels on the back (AF).

Light sensor, proximity sensor. GPS corresponds to BDS, GPS, GLONASS, GALILEO, A-GPS.

Equipped with a 7,000mAh battery that supports 18W USB PD fast charging, the size is about 248 x 167 x 9.2mm, and the weight is 480g. The price is 33,900 yen (according to Amazon research). Considering the configuration and LTE support, it can be said that the cost performance is high.

There is also an optional dedicated case similar to the iPad’s Smart Folio. It’s cheap at 1,900 yen, so if you need it, you should buy it together.

The housing is dark gray. It’s a metal body, so it’s not cheap. The actual weight is 503g. It’s hard to hold with one hand for a long time, but it’s a weight you can hold with both hands.

The front is the front camera on the center of the panel. There is a border as it is, but it is easier to handle because it does not cover the screen with a finger. On the back is the rear camera on the upper right. There is a Technical Conformity mark on the lower right side. Power button, volume ± button, USB Type-C on the left side. Speakers on the bottom left and right. microSD / Nano SIM card slot on the upper side and speakers on the left and right. There is nothing on the right side. Accessories are AC adapter (20W), USB Type-C / Type-C cable, eject pin.

Considering the price, the 10.4-inch display has good brightness, contrast, viewing angle, and color development. If it is too bright even at the minimum, you can turn on (default off) “Reduce brightness further” in Settings → Accessibility.

Also, the color of the screen in the posted photos is not clear because of the wallpaper, and if it is a more flashy photo or video, it will look beautiful. However, the film attached as standard has fine vertical stripes (in the horizontal position), and fingerprints are quite noticeable. If I were you, I would peel it off and use it, but I guess I just said that this is my preference.

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Change the wallpaper to flashy. the color is out.However, I can see that there are quite a few vertical stripes on the film.

There is a Color & contrast item in Settings → Display, and you can adjust the color temperature, contrast, etc. DRM/WideVine was L1 when I checked with DRM info. Therefore, it is possible to watch NetFlix etc. in high definition.

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Security level L1 in DRM info

I tried a little bit of the front and back cameras, but this is a useless level. I would like the image quality of the front to be improved even a little to compensate for the cost reduction without the back.

The fever is at a level that is not a problem at all (although there may be seasonal patterns) in the range I tried. It wasn’t even warm. Since the sound is 4 speakers, I thought it would be stereo in the vertical position, but it is not supported. It’s a pity that it becomes stereo only in the horizontal position (left and right are normal, not opposite like last time).

There is power all right, omission is good, too and hears sound well, too and can enjoy music and picture enough. However, it is painful that there is no 3.5mm jack, and the FM radio, which will be described later, cannot be used. What was a little interesting was that you can change the ringtone between SIM 1 and SIM 2 in Settings → Sound. In any case, this class is OK with this sound.

Supports face authentication with Android 12

At initial startup, the home screen is 1 screen. Place Phone, Messages, YouTube and Chrome on your dock. As for storage, 9.6GB out of 128GB is in use. IME is Gboard. Since the tablet information has Nano SIM, SIM related information is displayed at the top.

Swipe from top to bottom for quick access, swipe from bottom to top for application list, long press wallpaper to change wallpaper, etc. There are no functions or operations that have been added to Android itself.

By default, it is a navigation bar type, but you can also switch to a gesture type by setting → system → gesture.

The installed apps are “Assistant”, “Camera”, “Calendar”, “Drive”, “Photos”, “Maps”, “Messages”, “Wireless Update”, “Audio Recorder”, “Clock”, “Settings , Calculator, Phone, Contacts, Chrome, Files, FM Radio, Gmail, Google, Google TV, Keep Memo, Meet, “Play Store”, “Play Books”, “YouTube”, “YT Kids”, “YT Music”.

Although it is minimal, it is GMS compatible, so you can install your favorite apps later. FM radio can not be received because there is no 3.5mm jack in the first place, even though the earphone cable is an antenna.

Face authentication can be registered after setting the pattern, PIN, and password, but the UI is vertical only, and in this case, the camera is on the horizontal side, so it is a little difficult to register, and even during authentication, horizontal orientation fails more than vertical orientation. higher rate.

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Face registration (UI is vertical only)

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Settings -> Network & Internet -> SIM. APN set and working

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Settings -> Network & Internet -> SIM -> APN

The SIM setting has not been tested for calls because I used OCN Mobile ONE, which does not support calls due to the relationship I have. It is easy to handle without restarting by inserting and removing SIM, but APN is hardly registered and manual input is required. It can be a little difficult for beginners.

The CPU is faster than the MT8183, but the GPU is slower.

The benchmark test is a simple formula and posted the results of GeekBench 5 and Google Octane 2.0. GeekBench 5 is Single-core 360, Multi-core 1,509, Vulkan is 600. Google Octane 14,032.

For reference, the N-one “NPad Plus” (MT8183/6GB/128GB) introduced two years ago has Single-core 295, Multi-core 1,289, and Vulkan 1,286. Google Octane 9,349 (in brackets). The CPU is fast, but the GPU is about half as slow. Perhaps because of this relationship, when operated, it feels a little looser than “NPad Plus”.

GeekBench 5 of T50/T618 is Single-core 382, ​​Multi-core 1,332, Vulkan is 1,077. Google Octane 14,094. The balance is good, and I would have liked the T618 to be installed instead of the T616.

Battery life is 50% for both brightness and volume. When I continuously played full HD movies with Wi-Fi connection, the battery ran out before 13 hours. Both brightness and volume were sufficient, so it would be OK if it exceeded 12 hours.

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GeekBench 5 (Single-core / Multi-core). 360 / 1,509 (295 / 1,289)

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Geekbench 5. Vulkan 600 (1,286)

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Google Octane 2.0.14,032 (9,349)

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13% remaining after 11 hours


As mentioned above, the Teclast “T40 Pro” is a tablet equipped with a 10.4-inch 2K panel, Unisoc T616/8GB/128GB, and Android 12. Since WideVine supports L1, it is a high point that you can watch NetFlix etc. with high image quality. In addition to LTE, it seems interesting depending on the application that you can make calls.

On the other hand, there are some points of concern, such as no 3.5mm jack, no vertical stereo support even though it has 4 speakers, and a faster CPU than competing SoCs but a slower GPU. Nonetheless, it is one that users looking for an LTE compatible Android tablet for around 30,000 yen should use.


The article is in Japanese

Tags: Kazuhisa Nishikawas Irregular Column10 .4inch Android tablet LTEphone calls Teclast T40 ProPC Watch

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