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Don’t ever hand your phone to the cops
(www.theverge.com)
This is a most excellent place for technology news and articles.
It's not possible not to it you want to visit USA. If you don't, they'll reject your visa or deny entry. Thr only way is to use brand new cheap android before or after ( after is better ) and resell it once you go back. Most corporations do so
So the answer is to not visit the US then.
it's a policy that has never let me down