Tag: Dual-SIM

Dual-SIM devices support two GSM-based networks with two different SIM cards installed. They are often used to allow for travelers to switch between networks to find the best deal on international roaming and avoid expensive roaming costs.

Fixing Common Error Messages While Using International Travel SIM Cards

When using roaming SIM cards, inevitably we find ourselves eventually running into those evil “Invalid SIM card” errors or “please insert SIM” even though the SIM card is already in…