Answer:4G network mobile TD-LTE error correction 3G network mobile 3G (TD-SCDMA), China Unicom 3G (WCDMA, international roaming only), China Unicom 2G/China Mobile 2G (GSM) telecommunications are not available.
Answer:It is recommended that you use a cotton cloth dipped in alcohol to gently wipe the battery connector in the battery compartment of the host, reinstall the battery and press the power on button to determine whether it can be turned on.If you haven't started the machine yet, I suggest you go to the after-sales service for inspection
Answer:&nb*p; &n*sp; It is suggested that the building owner can use the corresponding model of brush wrap into the brush machine to solve the problem.