A senior phone subscription is not just about choosing a plan with unlimited calls. Even before picking up the phone to subscribe, several technical checks determine the viability of the offer in the medium term, particularly the network compatibility of the device and its integration with potential teleassistance devices.
4G Compatibility and the Phasing Out of 2G: The Network Prerequisite Before Any Subscription
French operators have initiated a gradual phasing out of 2G by the end of 2026, region by region. 3G will follow in the coming years. By the end of 2025, 2.4 million people, mostly seniors, were still using phones reliant on these networks.
Subscribing to a mobile plan without checking the device’s compatibility is akin to paying for an unusable plan. We recommend checking one specific point: the phone must support 4G and the VoLTE protocol (Voice over LTE), which allows calls to be made over the 4G network. Without VoLTE, voice calls are routed through 2G or 3G, both of which are being dismantled.
Phones with large buttons sold three or four years ago often operate exclusively on 2G. Before calling an operator, turn over the mobile, note the exact model reference, and check the manufacturer’s website for the list of supported network bands. If the specification only lists GSM 900/1800 MHz, the device is outdated.
To delve deeper into the documents to gather before contacting a sales service, the editorial team details the subscription over the years on Magazine Seniors with the required supporting documents and questions to ask.
Teleassistance and Senior Mobile Plans: Two Subscriptions to Coordinate
Modern teleassistance (home unit, fall detection bracelet, GPS watch) increasingly relies on a 4G mobile connection to ensure alerts even in the event of a fixed line or Internet outage. Of the approximately 750,000 seniors equipped with teleassistance, nearly 200,000 still use a device connected via 2G or 3G.
When subscribing to a mobile plan, it is essential to check whether the teleassistance device has its own SIM card or relies on the phone’s network via Bluetooth. In the latter case, a mobile plan interruption also cuts off the security alert.
- Identify whether the teleassistance unit has an integrated SIM with its own subscription or if it connects to the senior’s mobile.
- Ensure that the chosen mobile plan covers the residential area in 4G, not just in 2G (operator coverage maps distinguish between the two).
- Confirm with the teleassistance provider that their equipment is compatible with 4G/VoLTE, or risk having to replace the unit at the same time as the phone.
We regularly observe situations where changing plans leads to an interruption of teleassistance service simply because no one had asked about the network compatibility of the unit.
Information to Prepare Before Calling the Telecom Operator
The sales call typically lasts longer for a senior subscription because advisors follow a standardized script that does not always cover specific cases. Preparing a structured file shortens the exchange and avoids data entry errors.
- The RIO number (Relevé d’Identité Opérateur), obtained by dialing 3179 from the concerned mobile line. This transfer code is mandatory to keep the old number when changing operators.
- The exact reference of the phone (brand, model, IMEI number accessible by dialing *#06#), so the advisor can verify network compatibility.
- A recent consumption statement (available in the client area of the current operator), indicating the actual volume of calls, SMS, and mobile data used each month.
- The payment method: bank account details or credit card. Some operators only accept SEPA direct debit for no-commitment plans.
The RIO and IMEI are the two codes that most often block the process when they are not prepared in advance. Writing them down before the call avoids having to hang up and call back.
Senior Plan Without Commitment or With Commitment: Technical Choice Criteria
The majority of plans marketed as “senior offers” are no-commitment plans, billed monthly. They allow cancellation at any time, which suits people whose needs change (moving into a residence, changing homes, adding teleassistance).
A plan with a commitment of 12 or 24 months is only worthwhile if it includes a subsidized device. In this case, the total cost of the phone is spread over the duration of the contract. Comparing the price of an unlocked mobile to the total cost of a committed plan helps verify if the subsidy is genuinely advantageous.
For usage focused on voice calls and SMS, a data allowance of a few gigabytes is sufficient. Increasing to tens of gigabytes only makes sense if the senior regularly uses video conferencing or video streaming. An oversized mobile data plan represents a monthly extra cost without any benefit.
Local Network Coverage: The Test No One Does Before Subscribing
Each operator publishes a coverage map that can be consulted online. Before calling, enter the senior’s home address and check the 4G coverage (not just the overall coverage, which includes the soon-to-be-phased-out 2G). The discrepancies between operators remain significant in rural areas.
An unlimited plan on a poorly covered network at home is worthless. If two operators show equivalent 4G coverage, the deciding factor becomes customer service: the existence of a dedicated phone line, support hours, and the ability to reach an advisor without going through a mobile app.
The phasing out of 2G will redistribute coverage cards in certain areas. Checking the network situation today does not exempt from rechecking in six months, especially if the senior resides in a municipality where 4G coverage remains partial.