Easily to switch 2 SIM cards without turning off the phone.
No need to cut your SIM card.
No data loss when switching 2 numbers or turning on/off the phone.
User friendly option menu will embed into your phone menu system.
Very simple operation, easy plug and play.
Dual Sim Card Adapter for Apple Iphone 4 (4G).
Switching on-line without turning on-off default selection function.
Very simple operation, Easy Plug & Play to Let your iphone 4 get Two SIM Cards available in single one mobile phone. The adapter connects your current iPhone's Micro SIM with another normal size SIM card.
No data lose for some mobile phones when switching 2 numbers or turning on-off.
Both of numbers on-line at any time.
Special card IC design compatible with all GSM mobile phone.
Size: 8.4cm x 1.5cm
1 x iPhone 4 4GS Dual Sim Card Adapter
This review is from: Dual SIM Card Adapter Converter For iPhone 4 4G 4S
Pros: 1. Not only supported regular phone connection but also 2G, 3G, 3.5G (HSPA+), and LTE data connections.
Cons: Not so far
Other Thoughts: Use it's app to switch the phone provider without turning off the phone, but it takes a full minute to complete the switching. I auto-forward my phone call from one to another, so I don't switch that much, except the text messages can't be forwarded.
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