The OpusTel app works with a Swiss (landline fixnet) phone number on your smartphone (apple iOS and Android).
Calls are transmitted via the Internet.
OpusTel is an Internet provider-independent telephone solution for CHF 4.80 (USD 5.40) per month and can be canceled at any time.
Calls can no longer be made without credit. There is no obligation to make additional payments. You may recharge any time online using banks, credit cards, Bitcoin and TWINT: https://www.opustel.ch/en/recharge
OpusTel is not a closed user group, as a personal international telephone number is used.
With OpusTel you can be reached worldwide free of charge, regardless of the SIM card, from the public telephone network on your telephone number. OpusTel has no roaming costs. Incoming calls are free worldwide.
That's why the OpusTel app can be used in combination with much cheaper 4G, 5G and/or WLAN solutions to reduce monthly costs. The greatest savings potential can be achieved with 4G or 5G Mobile Data Internet access (without telephone minutes that expire almost always unused every month and have to be paid for again next month).
Switching the mobile number to “prepaid” for CHF 0.00 per month reduces the subscription costs by almost 50%.
Many customers make much cheaper calls with OpusTel and use WhatsApp free of charge for calls with friends. Calls between OpusTel apps are also free worldwide. Calls to external phone numbers with the OpusTel app are 5 to 10 times cheaper worldwide than conventional mobile calls with mobile numbers.
The savings potential is up to CHF 2,000 per year. There are international 4G and 5G providers without a mobile number from CHF 4.50 for up to 90 days of 4G Internet access (for example https://www.keepgo.com. )
An alternative global e-SIM solution is available from CHF 10 to CHF 50 prepaid for 5 GB or unlimited per month.
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During the registration process at https://www.opustel.ch/en/order , you can select a Swiss landline/ fixnet phone number in your preferred area code region (e.g. 041). On request via the contact form ( https://www.opustel.ch/en/contact ), you can also use an existing landline number (move from your provider to us). The OpusTel landline phone number is an additional phone number on your smartphone and can be used worldwide.
With this number you can make tap-proof and cheap calls, https://opustel.ch/en/contact . You can continue to use the cell phone provider's number as required. You can use the cell phone number or the OpusTel number as a second number without needing two SIM cards.
OpusTel calls are transmitted via WLAN (wifi) or the mobile data network (4G/5G). A good Internet connection is required.
The sound quality is then excellent, i.e. in HD (High Definition) quality: pleasant and not tiring.
Use OpusTel or try it out, klick the following link: https://www.opustel.ch/en/order