219+ iOS apps curated and reviewed
The best nxt fixo softphone apps on iPhone average 4.4★ across 219+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.
Get a free US phone number for unlimited texting and calling over WiFi or data. Save money on mobile plans by using this app to connect with friends and family globally. Offers inexpensive outbound calls and can turn tablets into phones.
Manage your wireless plan effortlessly with this app. Access plan details, track rewards, and enjoy fast refills. Stay connected with reliable coverage and 5G data options, all from one convenient place.
Switch to an affordable phone plan on a major 5G network. Enjoy unlimited talk, text, and fast data starting at $15/month. Bring your own phone and number, and manage your account or family plans easily.
This app provides a free second phone number for calling and texting within the US and Canada. Protect your privacy, use it for side projects, or connect with international friends at low costs. It offers features like voicemail and the ability to turn tablets into phones.
Manage your wireless account with affordable talk, text, and data plans on the T-Mobile 5G Network. Enjoy unlimited nationwide calling, global texting, and free international calling to over 90 destinations. Access features like free mobile hotspot and no annual contracts.
Make crystal-clear international calls, send mobile top-ups to over 300 carriers in 100+ countries, and perform secure international money transfers. Enjoy various calling plans, automated refills, and special promotions for added value.
This mobile SIP client integrates with cloud VoIP solutions, offering advanced call management and high-quality communication. It supports various codecs, multiple accounts, and secure calling features, with some premium functionalities available through in-app purchases.
Manage your T-Mobile account, shop for devices, and access exclusive benefits like discounts and freebies. Discover new plans, pay bills, track usage, and even manage home internet and connected devices.
Get a free, personalized local phone number for unlimited calling and texting. Share photos, videos, GIFs, and more. Customize tones and wallpapers for a unique experience. Upgrade for ad-free use and verification codes.
Enhance your calls with custom flash screens and record conversations. Send and receive SMS globally, even to major GSM operators. Enjoy features like location sharing and PIN protection for privacy.
Make unlimited free calls and texts over WiFi or cellular data, saving on cell minutes and international charges. Get real phone numbers and turn your devices into phones for crystal-clear communication.
This app serves as a central hub for managing your Metro by T-Mobile services. Access account information, track data usage, and discover exclusive deals and rewards.
This app enables VoIP calls and SMS over data networks like 3G/4G and WiFi. It also offers cross-platform instant messaging and simplified calling card usage. Users need an operator code from a VoIP service provider to use its features.
This app blocks 100% of spam calls and texts using advanced technology and a vast database of known robocallers. It ensures you never miss important calls while protecting you from scams and unwanted messages. The service also offers a family plan for comprehensive protection.
Make affordable national and international calls directly from your iPhone. Save on mobile costs by using this app over various internet connections, including Wi-Fi. Access your contacts and bypass VoIP blockades for seamless communication worldwide.
Get a virtual phone number for SMS and calls, and access mobile internet globally without roaming fees. This app uses eSIM technology to provide a second phone line and data plans for travelers, allowing instant activation and easy country switching.
Manage your mobile service with ease. Activate new lines, switch between major US networks, and track usage in real-time. Offers plans for individuals and families, with international data options and 24/7 support.
This app allows you to make high-quality voice and video calls over Wi-Fi or 3G using your PBX or VoIP provider. It offers features like call waiting, transfer, and recording, with background operation optimized for battery life. Easily configure accounts with a built-in QR code scanner.
This application provides a feature-rich VoIP softphone experience with easy account setup through one-touch provisioning. It requires a Cloud Code or QR code for configuration, and users should contact their VoIP provider for credentials.