Zte SPRO Quick Start Manual page 13

WARNING!
Use only ZTE-approved chargers and cables. The use of unauthorized
accessories may cause damage.
CAUTION:
Do not try to remove or change the built-in rechargeable battery in your
Spro by yourself. By doing so will violate the warranty policy from ZTE.
Contact customer service for support.
1. Plug the AC adapter into the power socket on your Spro and then plug
the AC adapter into an electrical outlet.
2. Disconnect the adapter when the battery is fully charged.
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