How to unlock 4G for the card pasting machine perfectly? Locking process

Some users will choose locked mobile phones, that is, those that have contracts with overseas operators. Once they change operators or leave the authorized area, they can't use it in theory. Only by activating the iPhone through the card sticker can they talk and send and receive text messages normally.

Recently, many people have found that the locked iPhone activated by card stickers can be used normally without card stickers after reactivation, and the locked iPhone becomes unlocked. In addition, the iPhone's ICCID activation strategy has changed, resulting in the invalidation of the network lock.

Perfectly bypassing the network lock, the card pasting machine only needs to be set and activated once, and it can perfectly reach the 4G mode. (Mobile, Unicom only, not supporting telecom CDMA), remove the card sticker and insert the card directly. The following methods are listed according to different cards for reference only.

Unable to access the system.

Stay in the activation interface, press and hold the Home key to make an emergency call, then enter "*5005*7672*00#", select the operator, click "ICCID Input" and enter the 20-digit vulnerability code.

Barrier-free system

Click Settings-Phone -〖SIM Card Application, click ICCID Input, and enter the 20-digit vulnerability code.

Many attempts failed.

You can insert the card sticker and the mobile phone card into an iPhone of China Bank, then click Settings-Phone -〖SIM Card Application, click ICCID input, enter the 20-digit vulnerability code, click Accept, take out the SIM card and the card sticker, and insert the card to activate directly.

The above methods can make devices with network locks such as the US version directly display 4G instead of LTE, and the signal is stable. The regional simulation is China, and you don't need to dial 86 first to make a phone call or start roaming, which is completely consistent with the equipment experience of China Bank.

Important note: After the setting is completed, you must remove the card sticker and restart the mobile phone, and the card sticker will be directly changed to the Bank of China.