Changing this level (if your phone allows it—many Android phones hide it in a secret menu, while iPhones abstract it away) has three major consequences.

Keep sensitivity Low when you are at home. Switch it to High when you cross a border and have confirmed your roaming package is active.

In the EU, roaming is free (Roam Like At Home). But if you are near the Swiss border, or traveling outside Europe, a high sensitivity setting might latch onto a cruise ship tower in the middle of the ocean, costing you €15 per megabyte.

A typical Roaming Sensitivity Level might be set at or -75 dBm . This means the device will not consider roaming until the signal drops below this specific number.

Na liście "Właściwość" znajdź lub Roaming Sensitivity .

In technical terms, the Roaming Sensitivity Level is a configurable parameter that determines the for the roaming process. It is the "line in the sand" drawn by the network adapter or the operating system.