Losing your mobile connection when entering Russia has become, in recent days, a very real possibility for those traveling to the country. It is not a blackout zone or an operator error, but a measure that is part of the new approach with which Moscow is monitoring its networks amid the conflict with Ukraine.
On November 10, a mechanism began to be applied in Russia that allows the use of certain SIM cards to be temporarily restricted when they reconnect to the country’s network. According to the Ministry of Digital Development, this is a system aimed at verifying that the line belongs to a real user and not a device used for other purposes. The idea fits with what Minister Maksut Shadayev advanced in August, when he explained that his department was studying blocking SIMs from abroad for a few hours when crossing the border.
When the SIM reappears. In the case of Russian cards, the authorities have established a mechanism that is activated when the line reconnects to the national network after having been inactive for 72 hours or after a period of roaming. During this interval, access to mobile data and the use of SMS is suspended. It is not presented as a technical failure, but rather as a preliminary check that the network executes before allowing normal use of the service.
For SIM cards that arrive from abroad, the system works more directly. When the line connects to the Russian network, the same temporary blocking that we have already talked about is applied, but with a clear procedure to remove it. The user receives an SMS from the operator that explains the restriction and includes a link to complete a captcha that proves that the card is in the hands of a person. If you prefer, you can do this by phone, where the operator confirms your details before reactivating services.
The drone war is also going through mobile networks. The official explanation maintains that some SIM cards with data access can be found inside enemy drones and serve as a navigation or control channel. It is not an isolated idea. In Operation Spider’s Web, described by CSIS, Ukraine used drones equipped with 4G/LTE-based systems and autonomous flight software. Even without stating that they all work the same, this precedent shows that mobile networks have become one more element of a conflict where each communication channel counts.
One more measure in a much larger mosaic. Determining the real impact of these limitations on drone raids is not easy, among other things because there is no single operating model. The CSIS analysis reflects that even in systems that rely on mobile networks, autonomy plays a key role and that the weight of connectivity can vary depending on the mission. In this context, the restrictions applied by Russia fit as another tool, the exact scope of which depends on factors that are not public and that vary from one operation to another.
For users, these measures mean living with a system that introduces an additional pause every time the SIM card changes context. The impact is especially visible in border areas, where mobile phones can automatically connect to networks in other countries and activate unwanted restrictions. Authorities have recommended configuring network selection manually to avoid this. Recovering the service involves following the steps we have mentioned.
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