iPhone 6+ 16 GB In very nice condition but locked by ATT in USA. To use in China you must use a Piggy Back SIM Card (卡贴 ka tie) that is easily available from Taobao or Local Dealers. You need to buy the card that supports your Carrier. Price for card on Taobao is around 20 to 30 rmb. I can help you buy it if you need help. You plug in both cards into the phone.
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Screen was replaces so Fingerprint ID doesn't work but everything else works great.