I've spent this summer 3 weeks in China, used 2 VPNs, both of them worked fine (1 cost less than dollar, the other 4-5 dollars), so did my wife, mother and her husband, guess how many times someone cared about checking our phone.
The biggest issue was when we travelled into Beijing province where there are mo strict border checks and police found out we didn't register our accommodation (at wife's family), the scary horrible policemen then locked us for weeks and deport us from country... No, seriously, that would more likely happen in US than in China, in China they just told us to register after the weekend at local police station and let us continue into province to check Great wall, policemen in police station could not care less and be more laid back about it.
Maybe visit some other countries to have actual experiences instead spreading everywhere your feelings about other countries based on some propaganda.