Iridium (numbers beginning +8816)

You can send a free text message up to 160 characters to an Iridium phone either:

 


 

Inmarsat (numbers beginning +8707)

You can send a free text free message up to 160 characters to most Inmarsat phones either:

 


 

Thuraya (numbers beginning +8821)

You can send a free text message up to 160 characters to a Thuraya phone either:

 


 

Globalstar Europe (numbers beginning +336400)

You can send a free text message up to 35 characters (Qualcomm phones) or 160 characters (Telit phones) to a Globalstar phone: