LeTV X800+ Contacts synchronization problem

Hello,
recently I have the following contact synchronization problem.
LeTV X800+, EUU 5.5.013S, China factory ROM, non-rooted phone.
Problem description: In the "Contacts" application, a big part of my contacts have been deleted (invisible) by the phone itself. After manual export of Google Contacts via VCF type of file and importing manually this VCF file via the phone's Contacts application, all contacts have been "visible" again. Within 24 hours again big part of my contacts have become "invisible" again. Again manual loading of the contacts from the VCF file into Contacts app. Again contacts deletion within 24 hours. VERY, VERY ANNOYING !!!

Any solution?
Thanks in advance!

[help] lost IMEI X800 CN

hey,
Hello,
I installed the 14S, I wanted to return to my old Backup functional 11S but I lost the IMEI. could you tell me how to put the IMEI so I can use my phone. thank you.

Clean ROM from LeTV for USA x800

Letv have posted a malware free ROM for the USA version of the x800.

https://sites.google.com/site/l1prousx800/

Has anyone installed this using twrp?

If so what was your procedure? Is it a straight forward flash?

Also has the ROM got Google apps included?

Thanks in advance.

Letv x800 cuoco92 14s: Blue Led Notification Light always on

Hi all

I'm new around here so can't comment in the ongoing dev thread for the cuoco92 ROM.

After flashing this ROM, the notification led light became blue (not an issue) but more worryingly it is always on. It is continously on from the moment the phone is turned on till it is shut down.

Anyone have the same issue? Any solutions?

Indian version stock EUI 5.5.0.14S ROM of X900 for X800 ( international version) ??

Hi everyone. Very excited that i have received my Letv X800 ( international version ) - ( mentioned CE0560 on the back panel) from Gearbest recently .

To my disappointment the ROM is very buggy with Youtube crashing, No color mode option unable to enable Hifi audio mode no System update app.

I am from India. In India Letv has not released X800 officially, but it has released X900 for which it has been pushing good number of OTA updates. As Indian Version X900 is an international version ( Not the chinese Version) and Runs the same Snapdragon 810 processor with 4gb Ram and 64gb Rom , can i install the recently updated Indian( International) stock Rom of X900 to my X800 ( International or U.S version) ?

differences Between X900 vs X800

1. 21 Mp vs 13 Mp ( primary camera) - where as front camera remain the same ( 4 MP- Ultrapixel camera)
2. Finger Print vs No finger Print
3. 6.33 inch vs 5.5 inch ( screen size)
4. 3400 mah Li-polymer battery vs 3000 mah Li-ion battery

Except these 4 differences mentioned above everything else is same in X900 and X800.

In India as LETV is offering content apps like Live , Levidi and Leeco My account would like to utilize these apps.

Here is the link for Recently Released stock ROM for Indian version X900 ( Le Max)- ( Hope it directly suits all international X900 other than Chinese X900)

Please suggest? Will this be the perfect Stock ROM for X800 - International or US version?