What kind of mobile phone SIM card does OPPO R7s use

OPPO's latest OPPO R7s is the same as the OPPO R7, which is a dual-card dual-standby mobile phone. Naturally, there are two card slots, and it also supports Micro SD (TF) memory card expansion, so the OPPO R7s card slot must be with friends. The design is the same as the single card slot dual card design, but the SIM card used by the OPPO R7s is quite special. The following small series will introduce you to the correct method.

OPPO R7 card slot 1 is Micro SIM, card slot 2 is Nano SIM, and Nano SIM card slot supports Micro SD memory card slot, up to 128GB storage space expansion.
Note: SIM card slot 1 supports 2G/3G/4G network, while SIM card slot 2 only supports 2G network.

Different Size SIM Card Conversion
1. The Nano-SIM card can be converted to a Micro-SIM card using a SIM card holder.
2. The standard SIM card can be cut into a Micro-SIM card using a card cutter.
Business Hall Card Change Guide
Mobile: In addition to the business hall, you can apply for a 4G SIM card in the online business hall.
Unicom: At present, it can only be handled in the business hall. Some areas are free, and some areas are 5 yuan.
Telecom: At present, you can only go to the business hall, and the fees vary from region to region.