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1, interface problem: Because the mobile power supply in order to adapt to a variety of mobile phone applications, so in the mobile power supply are configured with a common mobile phone interface. If the phone interface and the charging bank interface do not apply, you should find a wiring.
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2, the problem of voltage or current: because some mobile phones are more special, the voltage is different, so it can not be charged, the normal lithium battery is 37V voltage, like the Apple phone uses 5V voltage, if you do not do the boost, the general lithium battery is unable to charge the Apple phone.
It may be that the charging bank interface has poor contact or there is a problem with the data cable. Try to reinsert the interface and replace the data cable connection;
2, it may be that the power of the charging treasure is insufficient, try to recharge the charging treasure before use