Customer supportWhy does roaming have to be switched on during the test too?
Roaming must be switched on because a roaming SIM uses other operators’ mobile networks to connect to the internet.
If data roaming is switched off, the phone or router may still find a mobile network, but internet traffic is blocked. It then looks as if the SIM card is not working, when in fact only roaming is switched off.
When you test the SIM card in a phone, Wi-Fi must therefore be switched off and both mobile data and data roaming switched on. That way you test the SIM card’s real mobile connection and see whether it works as intended.
Check the roaming setting
Data roaming allows the device to use a mobile network other than the SIM card’s home network. With Wifi.se’s roaming SIMs it normally has to be switched on when the card is used on partner networks. If roaming is switched off, the router may show a signal but still block data traffic.
Good to know about the roaming SIM
A roaming SIM connects to partner operators in the countries included in the package. Which mobile network is used can therefore vary from place to place. Data roaming normally needs to be switched on, and in some situations manual network selection can help if the automatic choice has got stuck on a weak or unavailable network.
Useful links
→ See SIM cards for Sweden and Europe
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