Hello all,
I've got a Xperia Z3 Dual for about 10months now. I've encountered any problem with it since recently. I noticed that 3G Mobile Data abnormally slows. Before, it was good on both SIM cards I have in the phone. But now it's alternative : 80% of time it's very slow and the rest of time the bandwidth is normal. I can't understand : other smartphones have good bandwidth but my Z3 kind of slows the bandwidth deliberately..
PS : I've checked any app that may use the bandwidth and stopped it.. And the problem still persists. Thanks for your help!
