Hi,
I have a Xperia Z5 Dual. Recently, I try to use two sim card on this phone, and it does not work. both card shows no signal and no data. Unable to make any calls or internet. However, I am able to use the one sim card on the phone in either slot 1 or slot 2. Both sim card are good when just using 1 sim card in any slot. But if I use both sim card in the phone together, it will not have any signal and data. Any idea why is that and any solutions?
Thank you
