keep losing the signal while call is running

[samer711]

Dears,

my problem is in my new phone Z3 Dual, every thing in the phone is good and running properly but i noticed one problem recently.

when i receive calls or starting calls, some time the signal is suddenly lost and call broke and i lose the phone call then it works again.

my sim is nano sim and works just fine.

kindly advise

[samer711]

Thank you all for your support, I have format my device and till now it's running will.

I'll keep tracking this issue and advise you.

[Uliwooly]

@samer711

Keep us updated.

[samer711]

Still the problem is same and not solved even after format

i don`t know what to do.

[samer711]

and somting more, this issue is happening exactly after 5 min calls (after 5 min call the signal will be lost and the 2 sims restarting)

[Uliwooly]

@samer711

And this is a NEW nano SIM card? not an old nor trimmed SIM card?

[samer711]

Yes it's new sim

[Uliwooly]

@samer711

But is it NANO or Micro or did you trimmed/cut a regular SIM card?

[samer711]

Actually I don't know sim name but it's the smallest one.

[Uliwooly]

@samer711

settings > about phone > status > signal strength > what do you see?

[samer711]

I see numbers and keep changing like power rate or somthibg