I know some folks and they've been doing that since they've opened for covid (out every 3 months) and never got an issue. People cannot say this but I've heard there are helpers at the airport that will help you get through the passport check for a small fee if u got that apec card....
don't buy anything under 10k. If you can get a second hand samsung s22/a52 then it'd work. Anything cheaper than that is going to be obsolete and slow in a year or so