Crystal 4GB+64GB

Groygle

Only if you backup them with some root app. Without it no.

crystalnew

\n\n

jozsacsaba replied at 2018-1-5 23:38
Can I upgrade V1.1_20171013 to V1.1_20171125 with Sp Flash Tool without losing my apps and settings?

of course you can do that. untick user data and cache in sp flash tool (and preloader). your apps and data stay preserved.

Groygle

I prefer to wipe everything and put clear software. It's more safe for me. But yes you have right about untick user data at SP Flash Tool. I forget about it.

jozsacsaba

Thanks, guys.

jozsacsaba

I do it today and,working well,thanks again.

gueny09

the phone shows "ui system error" in loud-noise and you can not use the volume. gps 4 satellites in good weather and not theend of the ride?

jozsacsaba

No system errors,I use Igo Primo with constant 5-6 gps satellites.

gueny09

jozsacsaba replied at 2018-1-9 02:58
No system errors,I use Igo Primo with constant 5-6 gps satellites.

unfortunately already the error. with no gps program more than 4 goes with luck

jozsacsaba

\n\nTry this fix for Gps
http://community.umidigi.com/thread-16109-3-1.html
1) Enter SERVICE MENU #*#3646633#*#
2) go to Location TAB (on the TOP)3) Select Location Based Services
4) First Grey Button is GPS(OFF) flick to ON - below that you will see Satelite status updates
5) Change GPS MODE to FULL START
6) You should get Prompt from LocationEM2 asking for permissions - grant ALL
7) Go to last Tab - RAW DATA and flick navigation to ON and measurement to ON
- Your GPS should work.

jozsacsaba

I find news,about "UMiDIGI Crystal will receive the latest Android 8.0 Oreo version.
check link:https://www.getdroidtips.com/umidigi-crystal-android-8-0-oreo/