The 3G/4G vro with battery cannot charge the phone. We recommend that you check the following items:
1Insufficient vro power
If the remaining power of the vro。 is small, if only one grid of power is left, the mobile phone may fail to be charged. It is recommended that the vro be fully powered before charging the mobile phone.
2The vro is in the starting status.
The router needs to be in the boot state to charge the phone (TL-MR13U 5 V 2A charging USB port and TL-TR861 10400E two USB port can be in the shutdown state to charge), please confirm that the router is in the boot state.
Note:Some 3G routers (such as TL-MR12U V2.0 and TL-MR22U) have a charging file, in this position under the router only external power supply, other functions will be disabled. Some 3G/4G routers have the mobile power mode, and press the 2 power keys continuously to enter the mobile power mode, it is recommended that the router be switched to the charging file or work in the mobile power mode when charging the mobile phone.
3Other devices charge vrouters
Some vrouters with battery (such as TL-TR861 10400E) has a power protection mechanism, when the Micro USB interface connected to the router to charge the router, the router can not charge the phone and other devices at the same time.
Note:When charging a 3G/4G vro with a battery, it is recommended that the vro do not provide power to other devices such as mobile phones at the same time, which may lead to excessive heat and damage to the vro battery.
4, Data cable or mobile phone problems
The charging may be caused by the aging of the USB data cable and poor interface adaptation, or the charging fails due to a mobile phone fault. Try to replace other USB data cables to charge the mobile phone.
5, Try to shut down the phone
The USB port of some routers can only provide voltage and current of 5 V 0.5A. The general charging specification of the mobile phone is 5 V 1A. If the router is charging the mobile phone and the mobile phone is on, the power consumption of the mobile phone is high, it may be unable to charge. We recommend that you test the function after shutting down your phone.