maniac-tech/react-native-expo-read-sms

Library doesn't handle UCS-2 encoded messages correctly

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#101 opened on Apr 2, 2026

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buggood first issue

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Description

Any messages received with UCS-2 encoding will only return the final part of the message in the callback to startReadSMS.

Send an SMS that triggers UCS-2 encoding with multiple segments (e.g. Hello 👋 so nice to to meet you today - we should continue our discussion over lunch.) and observe how only the end of the message is shown.

Contributor guide

Research direction
Inspect the native Android SMS handling code to see how multipart UCS 2 messages are concatenated. Check the order of message parts and ensure that all parts are included.
Tech stack
javareactandroid
Domain
mobile
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaAndroidReact NativeExpo
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75