I want to record a call on android of others without letting them know. How to do it?
Why Secret Call Recording Fails on Modern Android
The Permission Problem
Android moved to a permission-based security model where users control what apps can access. Call recording requires multiple permissions that trigger visible alerts.
Required Permissions:
• Microphone Access (Always shows indicator in status bar)
• Phone State Access (Needed to detect active calls)
• Storage Permissions (To save recording files)
• Accessibility Services (Most recording apps depend on this)
The Notification Mandate
Starting Android 9, any app recording audio must display a persistent notification. This is enforced at the system level and cannot be hidden without rooting.
What Happens When You Try:
The notification appears immediately when recording starts. User can tap notification to see which app is recording. One tap can stop the recording instantly. The recorded person sees call quality changes or hears echo effects.
Alternative Approaches
If you need legit call monitoring, tools like Xnspy exist for parental control or employee monitoring. They work within legal boundaries because they require proper installation and consent. Still not invisible but at least you would not face legal problems.
Bottom Line
Google designed Android to prevent exactly what you are asking for. The technical barriers exist for privacy protection. Any workaround you find today will likely be patched in the next Android update. This is a losing battle against the entire Android security team.
Call Recording on Android: Technical Overview
Default Android Behavior
Android 9 and above disabled direct call recording through the API due to privacy concerns. Google removed this functionality to protect user privacy across the board.
How Apps Work Around It
Most recording apps now use accessibility services or speaker mode workarounds. They record audio from the microphone during calls rather than tapping into the call stream directly. Quality can be poor because it picks up ambient noise.
Methods Used:
• Accessibility API exploitation (Apps request broad permissions)
• Speakerphone recording (Forces speaker mode and records mic input)
• Root access solutions (Modifies system files, voids warranty)
• VoIP integration (Routes calls through third party servers)
Issues You Will Face
Android 10+: Google further restricted background recording. Most apps show persistent notifications now because of this limitation. The notification requirement is baked into the OS to prevent secret surveillance.
App Updates: Recording apps break frequently with Android updates. Developers play catch up every time Google patches their workarounds.
Some custom ROMs or rooted devices can bypass these restrictions but that opens security vulnerabilities. Not worth the risk for most users.
Most recording apps will still show some kind of indicator even if they claim to be hidden. The other person might see notification sounds or the call quality might change when recording starts. Android does not make this easy anymore for good reasons.
As a parent I get why you might want this but I have to say this is a slippery slope. If you need to monitor your kids there are better ways that do not involve deception. Talk to them first. Build trust instead of breaking it. Once they find out you recorded them secretly that trust is gone forever.
I am worried about the direction this is going 
Recording people in secret is not just technically difficult now but also ethically wrong in most situations. What happens if someone uses this to blackmail or harass others? The laws exist to protect people from exactly this kind of thing. Please reconsider what you are trying to do here.
Hey there! Look I understand you might have your reasons but this is tricky territory. If you really need call monitoring maybe look into Xnspy. It is designed for parental control and employee monitoring with proper consent. At least that way you are doing things the right way instead of sneaking around💭
Technical Breakdown: Why Android Blocks Silent Recording
System Architecture Changes
Google implemented MediaRecorder restrictions starting with Android 10. The AudioRecord API now requires visible user acknowledgment for any background audio capture.
Core Limitations:
• Foreground Service Requirement (All recording must run as foreground service)
• Persistent Notification (System enforces notification display)
• Permission Revocation (Users can kill recording from notification shade)
• Scoped Storage (Recorded files isolated in app specific directories)
Developer Perspective
From a technical standpoint, Google added SafetyNet checks that detect recording during calls. Apps that bypass these checks get flagged and removed from Play Store.
What Still Works (Sort Of):
Manual Recording Trigger: User must press record button during call. Not automatic but legal.
Third Party Call Apps: WhatsApp, Telegram etc allow recording through their own interfaces since they control the entire call stack.
Hardware Solutions: External recording devices that tap the audio jack (if your phone still has one).
Privacy by Design
The current architecture treats call privacy as a fundamental right. Any app that claims to bypass these protections is either lying, using exploits that will be patched, or doing something illegal. The notification requirement is not a bug. It is the entire point of the security model.
Bruh this is sketchy af 
Like what are you even planning to do with these recordings? If someone needs to be recorded that badly maybe you should not be talking to them in the first place. No cap this whole thing screams trouble waiting to happen.
I will tell you a story. My friend tried this exact thing a few years back. He wanted to record conversations with his business partner who he suspected was lying about money stuff. Downloaded some shady app that promised invisible recording. Three weeks later his phone was compromised. Someone had access to his banking apps, photos, everything.
Turns out these secret recording apps are often malware in disguise. They promise one thing but actually harvest your data and sell it. He lost thousands before he figured out what happened. Even had to get a new phone and change all his passwords.
The apps that actually work usually require root access which means giving them total control over your device. Think about what you are risking here. Is it really worth it? 
Plot twist: The other person is probably already recording you while you are trying to figure out how to record them 
In all seriousness though this is like trying to sneak cookies from a jar that has an alarm on it. The jar (Android) is designed to catch you and make noise when you try. Good luck with that mission impossible scenario lol
This makes me genuinely sad to read 
Whatever situation led you here must be difficult. But secret recordings will not fix broken trust or bad relationships. They just make everything worse. I have been in situations where I felt like I needed proof of what someone said but looking back that was never the issue. The issue was that I did not trust them anymore and no amount of recordings would change that. Please think about what you are really trying to solve here.
The Xnspy route makes more sense than trying to hack something together. It logs calls properly and you can review them later. Still needs consent though which I am guessing is not what you wanted. But that is the only way to do this without major legal problems.