Can I use my iPhone 4 while traveling abroad?
Yes you can..and if you are out of your coverage area you may need to face roaming charges.If you want to avoid the roaming then switch to the local sim of the country that you visit.To switch sim your phone should be an unlocked one.If it is locked with any particular network then the mobile will not accept/recognize other networks.To unlock your iphone 4 you can visit Simpleunlocking.com and specify the country,locked network.based on the availability you can get the remote unlocking service.For further guidance in this unlocking you can follow the free unlock instructions from Mobileunlockguide.com to aid in the unlocking process.
Yes, you can use iPhone 4 for voice and text in over 40 countries with data service in over 20 countries. For service availability and rate information, refer to the International Roaming Rates and Coverage. When travelling outside of these 40 destinations, the Global Travel program is the perfect short-term solution for the occasional or infrequent global traveler who needs to stay in touch when travelling internationally.