Numero eSIM is a mobile app that offers a range of products and functions to its users. It provides a virtual phone number for over 80 countries worldwide, international eSIM travel data for eSIM devices from 150+ countries, and custom telecom bundles for travelers in 12 countries. The app also offers free-roaming on a 2nd phone number while outside the user's country, a USA free phone number, and a virtual number to register in WhatsApp, Telegram, or any other chat apps. Additionally, Numero eSIM provides personalized voicemail, call forwarding, and a hide number feature on the virtual SIM or second phone number.

For those who are heavy on international calls for business or personal use, Numero eSIM offers local calling plans for even more savings. These plans are available for 20+ countries with the ability to get the plans as a subscription or purchase them as consumable credit plans. The app also offers features for personal use, such as sharing a 2nd phone number with strangers instead of the user's real number, using the USA number as a phone number for WhatsApp, chat apps, or online shopping, and taking advantage of the voicemail service or call forwarding on the second line in case of busy or no internet connection.

For businesses, Numero eSIM provides an international virtual number as a second phone number to give the business a global presence and separate personal life from the business. It also offers toll-free numbers for customer support and the ability to use the international virtual SIM to make commercial deals with international customers and let them call at local prices. For travelers, local eSIMs allow full mobile services without SIM cards in the chosen country, and free-roaming and the ability to receive calls for free on the virtual phone number when connected to the internet.

Subscription plans for Numero eSIM are available for 1 month, 3 months, and 1 year, with auto-renewal turned on by default. To register, a GSM phone number is required, and users can contact support via email at support@numero.global.

Overall, Numero eSIM offers a range of products and functions for personal, business, and travel use, providing users with more savings, privacy, and connectivity.