Secure SIM Login
SMS Plus uses SIM-based authentication to ensure only verified users can access messaging features. By logging in using a pin code that is sent directly to the Base device’s SIM number, users get a secure, identity-linked login process that protects conversations across all connected devices.
Multi-Device Access
With Premium plans, SMS Plus allows users to log in on multiple devices while keeping messages synced and consistent. This flexibility ensures seamless communication, enabling users to switch devices freely without losing access to their ongoing conversations.
Seamless MMS Sharing
SMS Plus supports smooth sending and receiving of MMS attachments like photos, videos, and audio files, sent using the Base device SIM. All media is delivered reliably through the same SIM-powered system, making sharing quick, convenient, and device-independent.
Synchronized Cross-Device Messaging
Unified Messaging Experience
SMS Plus allows users to send and receive SMS and MMS directly through the Base device SIM phone number, offering a seamless communication flow across devices. All messages, whether text or media, are routed securely through one SIM, ensuring consistent, synced messaging on every linked device.
Flexible Sync & Device Access
With customizable sync options and support for multi-device login, SMS Plus keeps conversations updated across all connected devices. Users can choose sync durations and intervals that match their needs while Premium access enables smooth usage across multiple devices.
Seamless Integration
SMS Plus works cohesively between the Base and Extension apps, ensuring identical messaging capabilities on both. Users enjoy a unified interface, synchronized conversations, and uninterrupted communication whether they are on the main device or an extension device.
User Login with Base Device SIM Authentication
SMS Plus ensures secure access by allowing users to log in using a pin code that is sent to the SIM card number of their Base device. SIM-linked authentication guarantees that only authorized users can access messaging features across devices.
Unified SMS & MMS Messaging Through Base Device SIM
SMS Plus enables users to send and receive SMS and MMS messages using the phone number of the Base device’s SIM card. All communication is securely routed through the Base device, allowing both the Base and Extension apps to deliver seamless, SIM-powered SMS and MMS messaging to other numbers.
Message Syncing Across Time Durations
SMS Plus offers flexible sync options to keep users’ conversations always updated. Users can sync their Base device messages for 1 month, 3 months, or 6 months, ensuring they have the right history available wherever they log in.
Customizable Sync Intervals
SMS Plus allows users to control how frequently messages sync across devices, offering options from Always Sync to intervals of 15s, 30s, 45s, 1m, 5m, and 1 hour, ensuring smooth, flexible, and efficient message updates.
Cross Platform Access
SMS Plus offers versions of the Extension app for; Android Devices, IOS Devices and a web based version of the Extension app that can be used on regular computers.
User Types: Basic & Premium Access
SMS Plus offers two user tiers to match different needs. Basic users can access the Extension app on a single device, while Premium users enjoy multi-device login support for flexible, seamless communication.
Login Using Base Device Number
Extension app mirrors the Base experience by allowing users to log in using the Base device number. This ensures a unified identity and a smooth continuity of conversations between devices.
Advanced Message Management
Extension app provides powerful tools to keep conversations organized, allowing users to delete, archive, block, and forward messages easily, ensuring a clean, manageable, and clutter-free messaging experience.
Rich Attachment Support
SMS Plus enables users to send MMS attachments such as images, videos, and audio files directly through the Base device SIM, ensuring quick, seamless sharing of essential media without switching apps or devices.
FAQ's
How do users log in to SMS Plus?
Users log in using a pin code that is sent to the SIM card phone number of their Base device, ensuring secure, SIM-linked authentication.
Can SMS Plus both send and receive messages using the Base phone number?
Yes. All SMS and MMS messages are routed through the Base device SIM, enabling seamless communication across the Base and Extension apps.
Does SMS Plus sync past messages?
Yes. Users can sync message history for 1 month, 3 months, or 6 months, depending on their preference.
What is the difference between Basic and Premium users?
Basic users can access the Extension app on one device, while Premium users can log in on multiple devices.
Can users log in to the Extension app using their Base device number?
Yes. The Extension app supports login using a pin code sent to the Base device number for a unified messaging experience.
Does SMS Plus support managing messages?
Yes. Users can delete, archive, block, and forward messages directly from the Extension app.
Can users send media files through SMS Plus?
Yes. SMS Plus supports MMS attachments such as images, videos, and audio files that are sent and received through the Base device SIM.
What type of devices does the Extension App work on?
There are both an Android and IOS version of the Extension App that can be used on Mobile devices. There is also a web based version of the Extension App that can be used on computers.
What security and encryption measures does SMS Plus use?
SMS Plus is designed with security and privacy in mind across both the Base App and Extension App. We use encryption to protect data as it travels between your device and our servers, ensuring that sign-in, synchronization, and account-related activity occurs over secure, encrypted connections rather than being transmitted in plain text.
We add an extra layer of security to communication with our backend systems. Data sent between your device and our servers is secured using HTTPS (TLS), and sensitive information may also be encrypted using industry-standard methods like AES.
We also follow standard security best practices in how we build and operate our systems, ensuring that data is not exposed unnecessarily and remains protected throughout its lifecycle.
On your device, app settings and account-related information are stored securely within the app’s private storage, isolated from other applications.
It’s important to note that standard SMS and MMS messages are transmitted through your mobile carrier’s network, which operates outside of SMS Plus and follows industry-standard telecom protocols.