Can connect to mobile network but can't make calls or send sms.

Hello.
The problem is as written in title.

A while ago my GF found this phone in woods in snow. It was barely visible so it must've been there for some time.
Of course it had passcode which we couldn't get past. Also was pretty strange because it didn't have a SIM card, which couldn't have fallen out because it had the silicone case around it.
We put up posts on her local facebook and on our public profiles, a month has passed no one has decided it's theirs so she gave it to me to reset.

Neither power or volume UP buttons were working but a little digging here and there and I found the microsoft tools to completely reinstall the phone. Now we have a nice spare phone in case any of ours breaks down, BUT we can't make calls from it. Tried both mine and her SIM cards, nothing. Signal is full, it easily finds 4G and I'm absolutely not familiar with windows phones(the last one I had was HTC Touch dual), but getting online - when WiFi is off - is possible. So it must mean the IMEI isn't blocked, right?
What could be our options or has she just found a fancy music player? (32GB is hell of a lot more than 8GB on my phone or even 16 on hers)
Thanks,
Tom.

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SMS/ Phone call Issues

Hello everyone!
I installed TKHD ROM and love it except i'm having 2 very big issues!

1. Text messages. I don't get messages friends send me even when they're right next to me.
I've tried AirPlane Mode, rebooted, cleared Data and Cache of the app itself and nothing :'(
2.. Phone calls. When placing a phone call it sometimes lags before making that little chime (the one that notifies you that you're now making a call before the ringer sounds) It could sometimes take a good 5 seconds before making the call. Or, sometimes i make a call and it goes straight to VM even tho the person im trying to call is right next to me. This is also the same when people sometimes try to call me. Tho i'm not even using the phone, when thye dial it goes straight to VM sometimes.
Once again i've tried rebooting, flashing the ROM clean all over again etc but the same thing persists.

How did i install this ROM? By following the exact guide provided on the OP.

ROM: Latest version of TKHD
Kernel: Whatever comes with this ROM tho i also use SkyHigh
Recovery: Latest TWRP
Bootloader/ Modem: The latest version (OKC?)

I know some may say its my device but we'll idk about that. It only happens on this ROM.

I really like this ROM and would love to stay with it but idk how i can do that if i can't get the basics to work

Please help XDA !

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