@Sam514
Assuming the one you deleted was not a Sky one have you set the other one as your primary one ?
On an iPhone: Open Settings and tap Mobile Service. Tap Mobile Data and select your SIM. Go back to the previous screen, tap Default Voice Line, and select your SIM to prioritize it for calls.
On an Android Device: Open Settings and tap Network & Internet or Connections. Tap SIM Manager. Under the Preferred SIMs section, individually select your SIM as the default for Calls, Messages, and Mobile Data.
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