GeneralYou don't have to turn off your phone to switch SIM cards (but you probably should)staff@engadget.com (Roger Fingas)
Why your Wi-Fi speeds can drop in the evening, and what to do about it

At a glance
Everyone getting online at the same time can slam the network, but working around these slowdowns is possible with a few tricks.
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- You don't have to turn off your phone to switch SIM cards (but you probably should) — Read original article
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- General
Everyone getting online at the same time can slam the network, but working around these slowdowns is possible with a few tricks.
This summary comes from You don't have to turn off your phone to switch SIM cards (but you probably should). Read the full article at the original source.