Troubleshooting - Zte WF720 User Manual

Troubleshooting

Fault
No.dialing.tone.after.
off-hook.
Phone.is.buzzing.after.
off-hook.
Phone.alerts.or.gives.other.
prompt.sounds.after.
off-hook.
You.hear.noise.after.
off-hook.
The.system.stops.sending.
dialing.tone.30.seconds.after.
off-hook.
Incoming.call.display.is.
abnormal.
No.response.when.power.on.
the.device.
Other.abnormal.
phenomenon.
Check.the.antenna.connection.or.con-
nection.between.the.device.and.tele-
phone.
The.telephone.may.be.not.compatible.
with.the.device,.change.another.one.
Make.sure.that.SIM.card.is.inserted.
properly,.and.valid.(consult.with.the.
network.carrier).
Make.sure.that.the.device.is.at.least.
2.5.meters.away.from.other.electronic.
devices.
If.the.device.runs.without.antenna,.and.
the.signal.strength.indicator.is.Yellow.
or.Red,.install.the.antenna.
Hook.on,.and.then.hook.off.again.to.
make.a.call.
Make.sure.the.phone.supports.CLIP.
function.
Power.off.the.device,.wait.for.seconds,.
and.re-power.on.
Refer to the User Manual firstly, and
then.check.whether.the.parts,.such.as.
power.supply.adapter.and.antenna,.
etc..are.connected.properly.or.not..If.
there.is.no.problem,.restart.the.device.
3
Solution