VoIP vs CSD

To help you choose the PrivateGSM version that fit at best your needs, we have sum up some key features:

PrivateGSM working on VoIP

• works on Nokia, Symbian 9 OS 3rd e 5th ed., BlackBerry and iPhone.
• requires a full internet connection (not WAP, nor MMS) on your mobile phone
• using an appropriate rate plan or a wifi connection, you can keep in control the cost of calls

PrivateGSM working on CSD

• works on Nokia, Symbian 9 OS 3rd e 5th ed.
• you must enable on your SIM card the CSD Line (CSD data / fax line), that you need to activate contacting your mobile operator, usually at no extra cost
• call costs may vary from normal phone calls, according to the rates that each mobile operator performs