Best Alternative to ZenSim in 2026

Lower pricing is the clearest gain: in destinations both cover, JamboSIM is usually cheaper for a comparable plan. JamboSIM also states that voice, SMS and phone numbers are supported; ZenSim states that phone numbers are not supported and does not say whether voice or SMS are supported.

Their destination lists overlap almost completely, with JamboSIM adding Belarus to its catalogue, while ZenSim covers Northern Mariana Islands, which JamboSIM does not list.

Comparable plans are usually cheaper with eSimCard in destinations both providers cover, and its coverage extends to places ZenSim does not sell, including Belarus. ZenSim still covers a few destinations eSimCard does not, so the choice may be settled by where you are travelling.

eSimCard states that voice, SMS and a phone number are supported. ZenSim does not state support for voice or SMS, and says phone numbers are not supported. The main trade-off is data: ZenSim publishes unlimited-data plans, while eSimCard lists none.

Plan flexibility is the main trade. Airalo covers nearly all of ZenSim’s destinations and adds places such as Belarus, while ZenSim includes destinations Airalo does not, such as the Russian Federation. Switching also means giving up ZenSim’s regional and global plans: Airalo offers country-specific plans only, so crossing borders may require another purchase. Prices vary by destination rather than consistently favouring either provider. Their published feature details differ too: Airalo states that voice and SMS are supported, while ZenSim states that tethering and top-ups are supported; each provider is silent on the other pair.