I was using this as a home landline. I was using it with a cheap SIM card inserted. The carriers I used were au → mineo → rakuten. There were no problems, and it was working fine. Since I used it for a long time, the battery is depleted. I mainly used it for receiving calls, so the battery lasted for 2-3 days. This item has been handled by other people, so please refrain from purchasing if you are overly concerned. As a bonus, I will include a glass film and a case. #Apple #iPhone #iPhone7 #CheapSIM #au Series: iPhone Model: iPhone 7 Smartphone Color: Rose Gold Capacity: 32GB Functional problems: None Carrier: au Maximum battery capacity: 80-84% IMEI (Serial Number): 359184078195368 Screen cracks: None