96
Unable to
charge the
battery
1.
The battery may be
over-discharged ; so it
cannot be charged
until it is connected
for a certain time.
2.
Its performance has
worsened.
Unable to
register to the
network
1.
Too weak signals or
strong interference.
2.
SIM card installed
properly? Bad contact
or SIM card
damaged? If the SIM
card is broken, please
contact the network
operator to replace it.