[Android Q&A, Help & Troubleshooting] rauliordache:
Hello my friends. I have some fresh news after testing 3 firmwares available for VOYO Q101. Maybe this post will be verbose but I hope that this info will help somebody :). I also have made a full partion format (losing IMEI) just to see whether it's easy recoverable. And yes,

it is

.

1. VOYO Q101 - Android 5.1 Lollipop version, revision 1 (Huawei screen) - Named by Voyo: 华为屏Q101 7.0系统(1)

- This kind of ROM have

no problems

regarding wrong battery % shown by Android. Linear discharge from 100-1% with another 20-30 minutes at 1% till full shut down

- No problems with GPS. No drops in the number of satellites while entering apps and overall good (very good) performance - have made a trip 120km with no issues, between 10-17 satellites in use / 22 in view.

2. VOYO Q101 - Android 5.1 Lollipop version, revision 2 (Samsung screen) - Named by Voyo: 三星Q101 7.0系统(2)

- This kind of ROM have sometimes a drop from 10 to 0%. Not sure if it's because I flashed the ROM at 40-50% and didn't do a battery calibration

- A little drop in the number of satellites while entering any app. But overall good performance.

No video problems in both revisions, despite the fact that we are talking about different screens (Samsung and Huawei)

3. VOTO Q101 - Android 7.0 - the known version, flashed on many devices VOYO Q101: 2/32, 3/32, 4/64

- I have formatted all partitions using Format All + Download option in SPFT, so I've lost the IMEIs (which were saved/noted in advance).

- Very easy recovery: using SN Writer Tool v. 1.153200. Pay attention! The last version (2.15.xxx) didn't work on my Win10 causing an error while trying to write the IMEIs on the device.

==========

3.1. Recovering the IMEI

- In SN Writer Tool (open as admin), choose ComPort: USB VCOM, Target Type: Smart Phone

- In the Option tab check: Security USB and Composite Device. In the Identify tab, under Engineer menu check: Enable check BtWifi.

- Go back in the SN Writer main menu, open System Config, check IMEI (under Writer Option) and also check "Dual IMEI" (under IMEI Option).

- As Database file select MD1_DB and choose, from the firmware folder, the file beginning with BPLGU with ltg_n at final (because there are 2 BPLGU files, in general)

- As AP_DB file, select the APDB file from the firmware folder. Click Save. Click Start in the main view of SN Writer.

- With the phone turned off, connect it via USB and wait for one minute

==========

- Back to our Nougat, unfortunately, I can see (and now, comparing better) that

it

has the problems regarding both the battery percentage + losing GPS satellites in apps (in any apps, including non-navi apps). Also, you can lose the GPS even just "tinkering" with Notification area (sliding it up and down several times), sliding some windows left-right-left, etc. - in general, any action taken in the OS is dropping the number of satellites (until 0, sometimes). You can check it via GPS Locker which will blink in the left upper corner at 0 satellites.

- Nougat it's faster than Lollipop (when working, opening apps, sliding up and down, even at getting a GPS lock !!! :laugh::laugh:), but not when we are talking about booting time: ~40-45 sec in 7.0 vs 30 sec in 5.1

- Maybe a better WiFi in Nougat (sometimes, when I've used 5.1 I've lost several times the WiFi)

I hope it's helpful. So, if you're gonna use the GPS (Waze, Google Maps) try to use a Bluetooth GPS receiver connected to the tab (in the 7.0 version) OR flash/use the first revision of 5.1

It was a big step because we know for sure that the 7.0 ROM is a crap, and it could be modified. So, there are no hardware problems (battery controller problem, GPS antenna, etc.). Just a stupid firmware.

A custom ROM could help us. Maybe porting an another 7.0 (even 7.1) ROM from a MT6753 device 2GB/32GB would change this low-budget tab in an ultra-powered device :)