Posts from What internet speed is required for online gameplay?
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In Heroes 3, you can 100% play via mobile as a modem, but when creating maps of size L or XL, it kicks you out – the time limit is exceeded...
Но поскольку я нищий,
у меня лишь есть мечты.
Я разостлал свои мечты пред вашими ногами.
Ступайте бережно, ибо вы ступаете по моим мечтам.

Bow down and hear our cry,
Our earthly rulers falter,
Our people drift and die,
The walls of gold entomb us,
The swords of scorn divide,
Take not thy thunder from us,
Take away our pride.
G.K. Chesterton: English Hymnal
I think it also depends on the provider. I personally played on MTS through my mobile phone, both in duels and on maps. I just set the settings to minimum and everything was fine!
I played through Tele2 with maximum settings on a large map via Uplay. It lagged a bit, but otherwise everything was fine. I think you can play in any case, as long as you have money on your phone.
Но поскольку я нищий,
у меня лишь есть мечты.
Я разостлал свои мечты пред вашими ногами.
Ступайте бережно, ибо вы ступаете по моим мечтам.
The speed is up to 5kb/s in duels, and if the internet connection has no delays, everything is great.
You can play on maps up to a large size, i.e., small and medium-sized maps. Large maps are also playable, but there will be lag, so you can only play 1v1 and not be the server.

