TopSIM vs TISA

Topsim is a part of InTouch Communication Services Limited. Founded in 1998, we have been at the forefront of the telecommunications industry, providing innovative and reliable communication services for over two decades. As a leading telecoms company, we are committed to connecting people and businesses across the globe with our comprehensive range of services. Our portfolio includes telephony solutions, high-speed internet services, and advanced networking options designed to meet the evolving needs of our diverse clientele. Whether you’re a small business looking to expand your reach or a large enterprise in need of robust communication services, we have the expertise and technology to support your goals.

Tisa: international calls, Mobile SIMs and Travel SIMs, all in one app. Call home for pennies, get a UK mobile SIM, or grab data for your next trip — Tisa brings your whole calling and connectivity life into one simple, ad-free app. Trusted by diaspora families since 2007. INTERNATIONAL CALLS • Crystal-clear calls over Wi-Fi or mobile data • Rates from just 1p/min to 200+ countries • Your own number as caller ID • £1 free credit when you sign up — try before you top up • No ads. No subscriptions. Pay only for what you use. MOBILE SIMs (UK) • Great-value UK plans with generous data + Roam Like at Home in the EU • eSIM or physical SIM — set up in minutes • Unlimited UK calls & texts, plus free international minutes on eligible plans • Manage it all in-app: data usage, bundles, upgrades and bills • Add SIMs for family and manage them together TRAVEL SIMs • Travel eSIMs for 190+ destinations — install before you fly • Buy in seconds, activate on arrival, no shock roaming bills • Keep your usual number for calls & texts • See your remaining data, validity and packages in one place WHY TISA? • Since 2007, a name families trust • No ads, ever, not now, not in the future • No lock-in and no surprise fees • Refer friends and gift calling credit to loved ones • Friendly UK-based support