@894101

Various problems: e.g.: Handover when you leave your apartment (or any place with a WLAN connection) while you have a call running via WiFi-Calling, then I have noticed on various devices to this day that the call is still frequently dropped instead of being cleanly transferred to the mobile network, tried with various providers (network) and end devices/CPE (meaning smartphones), additionally, some providers have problems with WiFi-Calling when you are abroad because of the routing and billing (assignment via IP address whether you are/were abroad) or not. The German provider fraenk.de (MVNO in the Telekom network) is, in my opinion, very transparent and recommends deactivating WiFi-Calling abroad, as otherwise chargeable calls (from DE to abroad; not included) occur because Wi-Fi Calling must be routed. How an MNO handles this technically, however, likely varies. The fact is that WiFi-Calling still does not work everywhere (keyword: Handover) as was originally propagated in the media.

@LeutrimShallti: A very, very big thank you & compliment to you for this OUTSTANDING site that you have created here and which "replaces" the former site mobilecommunity.ch as well as the Orange Community even earlier and of course in a certain way also the Swisscom Community (or rather complements it). If the map could also be displayed by canton, it would be great (then one could see in which canton which provider has how many macro sites).

Many of the posts can be answered simply: Spusu is a complete independent MVNO that has its own backbones. Strictly speaking, as far as I know, it is actually the only real MVNO in Switzerland. Most other 3rd-party labels such as Wingo, M-Budget, Yallo, CH-Mobile, go-mo.ch, Digital Republic, Lebara, etc. are technically mostly very similar-identical to the original (often even SIM cards with the MNO label on them) and also legally/factually in many cases either direct subsidiaries of one of the big three MNOs or some "cooperations" (e.g., Wingo = Swisscom subsidiary, M-Budget = Swissco+Migros, etc. Thus, it makes little sense to draw conclusions about the actual performance of the used MNO through speed tests of an MVNO. Hence also the logical routing to/via AT. In Austria, Spusu partners with the network provider 3, in Germany since the recent launch with Vodafone (a network that I would avoid for that reason alone since approximately 10-12 million customers of 1&1 Drillisch were ported from O2 to Vodafone -> localized overloads are pre-programmed there, while the O2 network now has pleasant cell breathing in many places). Salt generally usually has slightly lower peak values in speed tests even under optimal conditions (100m from the antenna, clear line of sight, low cell load, many frequencies activated, modern Huawei RAN equipment or Nokia, etc.) because they simply have fewer frequencies; in return, they also paid much less than Swisscom and Sunrise https://www.bakom.admin.ch/de/versteigerung-der-mobilfunkfrequenzen-im-2012 https://www.bakom.admin.ch/de/vergabe-der-mobilfunkfrequenzen

As of today: NOT activated (colleague lives 100m from the nearest Sunrise AAU antenna), which is also logical for a budget provider, they only follow much later.