Well, you’re right about the question. I just thought if it’s an older Anbdroid I’m no longer on the safe side. But I’ll have a look at mircro.org, so far it’s a white map.
I love this helpful community, big thanks to all of you!
It seems that my XZ1C takes to long time to log into the cellular network after restart or airplane mode. Is there something I could do about that, or how to find out if there is an issue with the device?
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My XZ1C, too, has always been problematic in this respect, since I started using custom ROMs (/e/OS, and now iodéOS). Usually it eventually connects without intervention, but sometimes it’s just stubborn. At that point I have to switch to 2G/3G and try to force it to connect to some signal, wait for the “E” to display, then switch to 4G. (This is on T-mobile USA, which still has some 2G network remaining.)
I use the *#*#INFO#*#* menu to force-refresh/update, but it still doesn’t respond every time. I’ve even had to switch to a different SIM card, then switch back to the original SIM to reacquire the network.
I’m usually doing this inside my house, which is where I power up the phone, so maybe the signal is weaker there, although outdoors is sometimes problematic, too.
My XZ1 (poplar), on the other hand, performs better, but isn’t VoLTE-capable. (This is currently my main phone, since I now use JMP Chat to handle calls and messaging over the internet, plus a data-only SIM to provide the roaming network connection. That’s instead of a mobile carrier’s SIM.)
Did you look at the settings in the Xperia Parts menu?
For me, it takes about 30s to connect to mobile network/mobile data after booting / airplane mode. I learnt to live with this, it is still tolerable. When there is connection, there are no issues. Switching from 4G to 2G if necessary and vice versa.
I changed the modem in the Xperia parts settings for the better (if I remember this right), never activated the “Network Switcher” as the info does not match the behavior of my phone.
Also I turned the IMS features “on” though I don not use VoLTE as my carrier doesnt support it. And I don know what IMS is… Do I need it to call via Internet (with Signal app f.e.)?
Maybe deactivating it would be better?
IMS features are needed for following features:
- LTE call. Advantage: mobile data is available during call (in contrast to 2G call) and it is possible where the 2G/3G network is not available or switched off already
- WIFI call: you can call via WIFI when there is no mobile signal. When you call from any country in the world via WIFI call, it is like if you were in your home country. Conventient when you call family / friends at home from abroad.
When you active IMS features, the phone tries to use modem settings that match to your carrier in your country. When you switch it off, the phone uses a “fall back” modem which works in general with any carrier but then you can only make calls with 2G and LTE and WIFI is only for data. Then, you need a messenger service like Signal for calls via data.
Wow, what a helpful answer, thank you @rom4nb !
Will activate it now 
A new version of TWRP for lilac is available fro download from https://sourceforge.net/projects/yoshino-testbuilds/files/lilac/
Details in this XDA Forum post
This version handles decryption of the data partition, so backup and restore of the data partition should work. I tried the backup and restore on a device runnning an unofficial build of LineageOS, encrypted with a pattern, and it seemed to work fine. One little quirk: when I press Restore, I see a message saying ’ Pattern is enabled. Pattern should be displayed before restore’. I ignored it and swiped to ‘Continue restore’. I hope the misleading message will be removed in a future version, but for now you can just ignore it.
The developer reported that decryption using a PIN also worked
Thank you,
I’m still not really comfortable with the recovery thing.
So I have 2 questions :
- Do we have to change version or will it work whithout changing it ?
- If I change recovery, will it erase my data or will it be like when I’m doing a dirty flash and don’t change “anything” ?
Thanks