That means that anywhere on the world, you can connect home and enter virtually into your home network, accessing also the phones on it.Īll of them requires work - "the system" very clearly does everything to prevent you from doing this, but it is still possible and you can do.Īnother option is using tor to make your phones accessible from everywhere. You can also use your own home wifi router as a VPN access point. If the ISPs you use do not filter so vehemently, you can do the sftp-based data transfer even if you are not on the same wifi. Their reason is security, what could be an acceptable reason - if the whole behavior of the whole system would not point consequently to the direction, that somehow you always need to upload all your data to hostile USA companies (and "services"). Typically ISPs dislike the incoming connections and they often filter them. This requires some skill to set up.ĭirect phone-phone communication over the internet is problematic, but sometimes works. You can also have your own server (accessible over the internet, or accessible over a vpn) what you can use for a cloud-independent intermediate storage. This is painful at first, but after everything is set up, it can be done nearly so easy like the "common" solution. If the phones are on the same wifi network, you can install an sftp server on one of them (example), and then use an sftp client (example) to send/receive data. Bluetooth is a well integrated builtin functionality of all android phones. It is similar to wifi, except that the practical range is only some meter. Here the case is far more easy, if both phones are on the same local network. What remains, that is the tcp pased, direct digital communication between phones. Furthermore, doing it is inherently alien from the androids (although still possible). Today the providers use various compression algorithms which optimize the sound transfer (for human voice), but limit the bit rate to about 800 bit/sec. Some decades ago, an (even at the time) slow communication was possible by modems (with maximal transfer rate of 56 kb/s). Direct phone-to-phone data transfer, on sound channel, is today inherently incompatible with the system.
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