Can DroidVPN connect on my phone that has no load or credit?

Posted on November 8, 2013 @ 3:52 am

Question: Can DroidVPN connect on my phone that has no load/credit or internet plan?

Short Answer: NO, since DroidVPN needs an internet connection to work, If you do not have a load or an internet plan then this means that your phone cannot connect to the internet.

Long Answer: DroidVPN can sometimes connect on some ISPs even without load or your ISP won't deduct anything on your load. That is possible because if your ISP has a loophole on their network or they are having a maintenance which enables your device to use the internet even if they do not have any airtime,load,balance or active internet plan on their mobile phone. Some ISPs only monitors certain traffic and destination ports of your connection to know if you are using your internet connection or not.

For example most ISPs will not charge you if you are using ICMP to tunnel through our servers. These ISPs normally allows you to send ICMP packets even if you do not have any load. That's because ICMP is normally used by network devices, like routers, to check if a device or host could not be reached. Now if you can no longer connect or your ISP is deducting your load then it means that your ISP no longer allows you to send ICMP packets if you do not have a load and if you currently have a load then they will start deducting load on your phone.

Another example is if your ISP inadvertently opened a port that is not monitored for accounting purposes. The most common open port is UDP port 53, this port is used by DNS servers. DNS is used in resolving hostnames to their numerical IP addresses. Like in ICMP most ISPs also freely allows you to send UDP packets on that port without charging you since this port is normally only used to resolve domain names. Now when your ISP starts monitoring that port then you wont be able to tunnel on that port for free.

Additional question: Is there anything I can do to prevent my ISP from deducting my load?

Answer: You can find a new open port that your ISP is not monitoring. If you cannot find a new port then there is nothing you can do if they started deducting your load since they(Your ISP) are the one responsible if they will charge you or not. If they closed the port you are using then there is no way you can bypass that since that is already set in their firewall which you and even us have no access to.