[Device Reviews and Information] YuriRM:
I am not a Sheik from Saudi Arabia.

I will have to go to my parents to check the PC files. Sometimes I regret my decision to opt-out of cable TV, Internet and PC at home. However, it was the only way to go back to reading books, enjoy the surrounding landscape and I am happy with it. That is why I am often unable to perform tests on my Takee. Fortunately, you showed up in this XDA forum bringing much needed help in testing and reviews. Your efforts are contributing decisively to prolong the interest in this remarkable phone. Thank you very much!

Anyway, I tested the GSM calls on the original ROM from October 2015 and found it buggy on my cousins TAKEE. Then made an OTA update from October to November 2015. Another test to hear the Toc-toc noise. Afterwards, downloaded the boot image of October from the link provided by Pogodancer and flashed it. A third test to confirm perfect GSM calls was performed. To be over cautious, downloaded as well the boot image of November from the link provided by Pogodancer and flashed it. A fourth test to confirm the return of Toc-toc noises. Finally, flashed again the boot image from October 2015 and performed a fifth test to confirm perfect GSM calls.

This golden Edition Takee has been returned to my older male cousin (60's) two weeks ago. However, I fear that it will not survive long because he has damaged three phones this year. He his complaining that the Uber taxi app is not compatible.

The other two Takee units belonged to younger female cousins (20's and 40's). They were smashed against the wall and destroyed. The bugs in GSM and VoIP calls drove the girls mad. They refuse to talk to me. They bought iPhones instead.

The three Takee units of my friends... one was sold immediately by a young female (30's) that could not stand the Takee bugs. She does not talk to me either. She bought a Huawei P8 Lite.

The other two Takee units belong to a couple (50's). They rejected my offers to switch the boot image file. They refuse to talk to me too.

All in all it has been a great lesson in life. Never buy or give advice on smartphones to family and friends. My reputation has gone up in flames.

EDIT - can you test OpenScale app and SANITAS HealthCoach app for the weight scale from Lidl, please? You will have to use Mobile Faker [Xposed], Device Faker [Xposed] or Market Helper [Root]. Does this trick enable the use of Uber taxi app?

EDIT - do not forget to test the Gyroscope too. The boot image of November 2015 has a new kernel with undisclosed new functionalities. These have not yet been explored. What else has been introduced apart from the Toc-toc noise perceived as a new bug? They were trying hard to fix bugs in GSM and VoIP calls plus Gyroscope.

Remember that Chinese teams have many specialists, each one knows just their bit. They are not like a Russian developer that being a generalist knows everything. Therefore, the Toc-toc noise is perhaps because something else is still missing from or was removed by mistake in another component of the ROM. The users Stas30 and Maxmydishe found a solution that was elusive to the Chinese by switching the image boot. Is it possible and safe to switch other ROM components?