Iridium Satellite LLC 9555A Manuel D’Utilisation

Iridium 9555 Satellite Phone User Manual        165

15: T

roubleshooting

Phone won’t power 
on.

•  Did you press and hold the power button 

for a minimum of three seconds to turn the 
phone’s power on?

•  Check the battery. Is it charged, properly 

fitted, and are the contacts clean and dry?

You can’t make calls.

•  Check the antenna. Is it fully extended 

and correctly angled? Do you have a clear 
unobstructed view of the sky?

•  Did you enter the number in international 

format? All calls made from the Iridium 
satellite system must be in international 
format. See “Placing a Call” on page 32.

•  Check the signal strength indicator. If the 

signal is weak, ensure that you have a clear 
line of sight to the sky and there are no 
buildings, trees, or other objects interfering.

• Is 

Restricted displayed? Check the Call 

Barring setting.

•  Has a new SIM card been inserted? Check 

that no new restrictions have been imposed.

•  Check to see if your fixed dialing list is 

enabled. If so, you can only make calls to 
numbers or prefixes that are on the list.

You can’t receive 
calls.

•  Check to see that your phone is powered on.

•  Check the antenna. Is it fully extended 

and correctly angled? Do you have a clear 
unobstructed view of the sky?

•  Check the signal strength indicator. If the 

signal is weak, ensure that you have a clear 
line of sight to the sky and there are no 
buildings, trees, or other objects around.

• Check 

the 

Call Forwarding and Call Barring 

settings.

• Check 

the 

Ringer setting. If it is off, there is no 

audible ringer.

•  Check to see if your fixed dialing list is enabled.