For a smooth gaming experience, it's very important that you are connected to a reliable network and that your device's signal is strong.
Full bars on WIFI or mobile (cellular) data coverage alone is not always enough to guarantee a solid connection, because local networks can slow down and get overburdened at times. This is especially true if you play in a moving vehicle or public transport, including the underground .
As with any other online service, we recommend playing over WIFI with a good internet service provider, or at least a solid 3G/4G connection with a reliable carrier.
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