No cellular signal after 5.0.2 update

After updating my Z2 (D6503) to Lollipop I got 'Invalid card' and no mobile signal, once in 1-2 days.
After rebooting the phone everything is fine but just for 1-2 days.
I've tired factory reset and pc companion repair but without success.

@Delicon from sony staff
I would ask the user to try:
- Switch network mode to check if it might be an issue with a certain network
- Try manually selecting the right network (it might already be set on manual causing issues)
- Check with the operator if they are aware of any network issue
- Try another SIM-card
- Repair the phones software
- If possible, try another operator
If the above fails then you would need to either return your device to the place of purchase or contact Xperia care and have your device inspected http://www.sonymobile.com/global-en/support/contact-us/
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.   Richard P. Feynman

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