https://community.o2.co.uk/t5/Discussions-Feedback/Using-phone-in-USA/m-p/550626#M38032 Certainly turn off data (mobile) connection and just use wifi. Dial 1760 before you eave UK to turn off voicemail. Use phone sparingly whilst abroad or if feasible obtain some local PAYG SIM's. Tue, 15 Oct 2013 09:23:37 GMT MI5 2013-10-15T09:23:37Z https://community.o2.co.uk/t5/Discussions-Feedback/Using-phone-in-USA/m-p/550608#M38030 <P>Hi all,</P><P>&nbsp;</P><P>My partner and I want to use our Blackberry's in the USA and wonderd what extra things we need to do so as not to get an unexpected large bill when we return</P><P>&nbsp;</P><P>Thanks</P><P>&nbsp;</P><P>Paul</P> Tue, 15 Oct 2013 09:03:54 GMT https://community.o2.co.uk/t5/Discussions-Feedback/Using-phone-in-USA/m-p/550608#M38030 Anonymous 2013-10-15T09:03:54Z https://community.o2.co.uk/t5/Discussions-Feedback/Using-phone-in-USA/m-p/550626#M38032 Certainly turn off data (mobile) connection and just use wifi. Dial 1760 before you eave UK to turn off voicemail. Use phone sparingly whilst abroad or if feasible obtain some local PAYG SIM's. Tue, 15 Oct 2013 09:23:37 GMT https://community.o2.co.uk/t5/Discussions-Feedback/Using-phone-in-USA/m-p/550626#M38032 MI5 2013-10-15T09:23:37Z