The dual charge in the mobile phone mainly refers to the configuration of the mobile phone including two batteries, two chargers, generally a seat charge and a brigade charge. Mobile phone taboo:
Avoid touching the metal sheet of the SIM card, any scratch or damage will cause the SIM card to be unreadable.
Avoid placing the mobile phone in the air outlet of the air conditioner, because the water condensing in the mobile phone will invisibly corrode the machine board.
Avoid three: the charging time should be enough, generally 8 hours is enough, if excessive charging will reduce the battery life.
Bogey four: Remember that if the mobile phone antenna is not needed, please do not pull it out at will or play as a toy to avoid affecting the reception.
Bogey five: In order to avoid accidental wet mobile phones, put on waterproof bags and waterproof capsules, which can play a protective role.