Not sure that's really much of a travel question ... There are loads od reasons that a card will be temporarily frozen by a bank, not least of which is if they think there is suspicious activity on it. They do it all the time with me, and I prefer their caution than an unexpected bill for transactions made by someone else.
Caution rules over convenience. about 8 years ago
In china happen most of the time
If the amount you are going to buy is high it happen about 8 years agoAnswered by Fouad Fred via Ask a Nomad iPad app