Today, some mobile applications have a number of restrictions for users. Most often, these restrictions are at the level of countries or regions.
A certain social network may be banned in other countries. Or an American auction can require users to register with an American IP address only. Or some game application is country specific. All of these restrictions can be reliably bypassed with VPN or Proxy server and all applications can be used to their full potential.
Proxy Server
To circumvent restrictions, simply buy a proxy of another country where this resource is allowed. You can do it very easily: the proxy server will replace the IP address of your device. So, if a social network, for example, is not available in the U.S., but you are in this country, you can buy a proxy for Ukraine, for example. So the traffic will go through Ukraine, and you will be able to use the resource as if you were in the Ukrainian territory.
Virtual Private Network
Pretty much the same as Proxy server does, a VPN service will provide you with a module that you install on your mobile (Android or iOS). After installation, you enable that module every time you connect to the internet, you will be connecting thru VPN service, not your usual Internet Service Provider. This totally hides your IP address and therefore hides your location.
For example, there are some games for mobile devices, which are available only for residents of a certain country. If you decide to buy a VPN service, you will be able to relax and enjoy the process in these games. Also, there are some major marketplaces that are only available to users with an American IP address. A proxy will solve this issue as well.
There are an overwhelming number of VPN services to choose from online. Just a quick search in any search engine returns dozens and dozens of VPN services. Most people want a VPN for privacy reasons and any good VPN service will provide that, additionally, people want to hide their IP address for security and also in order to unblock content. Check their plans and most importantly read their privacy policy.