I sure hope not. I work for a financial institution and our phones are locked down hard, including pair locking. This is done as a requirement from the FSA as

I sure hope not. I work for a financial institution and our phones are locked down hard, including pair locking. This is done as a requirement from the FSA as a result of having access to confidential data on the phone. None of the data is stored on the phone, or even cached there, but it's still pair locked. I regularly bring my phone through US customs, and i've yet to have any problems. Granted, i travel from a visa waiver country, and am a white male, so my experience is probably not typical. My personal phone gets backed up and wiped before travelling, and is usually just running a selection of "basic apps" - phone, messages, and a few utilities. Once i arrive at the hotel i restore it from the real backup, and repeat before leaving again. 10-15 years ago this was the procedure i would follow when traveling to China or Russia, but modern times has expanded this to include the U.S.A. and GB. If it's just a short trip (1-2 days) i just bring my company phone though.