Need help. No Simcard problem

add

Hi everybody.

I have this problem before, but after a hardreset it worked. The thing is, i dont want to do a hardreset, because setting up the phone and installing all the apps again it's really a pain in the ass.
Maybe there is a workaround that some people could help me.
I can tell what i did:

I went to the engineering mode with code *#*#3646633#*#* then to BAND MODE and chose the according SIM slot (here SIM 1) and since i live in Berlin-Germany i disabled all the LTE bands,
except band 20, because i thought it's the band here in germany. And i did this because, although i have LTE-Contract at 1&1 (E+ on roaming with O2 because O2 bought E+ and it is deactivating E+ stations we have to use national roaming, otherwise no connection),
I had bad LTE performance, no matter where i am (I am a Taxidriver so i tried it at very different parts of Berlin).  And now my phone does not recognises any simcard at all. And i cant revert the tweak because nothing is selectable (greyed out) and when i go to the engineering mode
Bandmode again it says Query supported mode failed. Nothing helped. Either restarting nor changing other Simcard or slots.

Sorry for my english. i hope i could make problem clear.

Any help is appreciated.

Thanks in advance

MarcinP

Also you can try perform factory reset of network (settings - backup and reset - network settings reset)
So please flash complete ROM with user data unchecked.
Here you have SPFT updating procedure.
http://community.umidigi.com/thread-11-1-1.html
Here you have all available ROMs
http://community.umidigi.com/forum-148-1.html

add

MarcinP replied at 2017-3-26 02:26
Also you can try perform factory reset of network (settings - backup and reset - network settings re ...

Hi MarcinP,

Thanks for the advice. But i am not fmiliar with rooting and afaik rooting kills the warranty. So i did a complete hardreset and installed all again. But thanks anyway.

MarcinP

add replied at 2017-3-26 20:17
Hi MarcinP,

Thanks for the advice. But i am not fmiliar with rooting and afaik rooting kills the  ...

SPFT is not rooting process.
Ben informed me that he updated SPFT instruction and there is no more information about preloader uncheck.
If you follow this instruction you will be able flash your phone without any issues but you are right this procedure is for advanced users.

MarcinP

add replied at 2017-3-26 20:17
Hi MarcinP,

Thanks for the advice. But i am not fmiliar with rooting and afaik rooting kills the  ...

Next time you can try perform factory reset of network settings not of full phone!.