Nowadays there are many reliable VPN provider in industry so in order to find the best one, go online and check out the reviews for different VPN services. Make a comparison of the features, costs, security, speed, bandwidth, server location and connectivity protocol. By doing your research beforehand, you can narrow down your options to two or three VPN service providers before making a final decision.
I personally subscribed to purevpn as it helped me to bypass the restriction when I was in China through the following dedicated app but I'm sure you can find many reliable providers by checking those reviews:
Hope it could help.