Audio freezes frequently while watching videos on iPhone SE 2nd Gen.

suchi98 wrote: "Yes

Maximum Capacity 82%"

suchi ~ Have the weak, aging battery replaced:

iPhone Battery & Power Repair

About genuine iPhone batteries

Repair Provider Verification

(Articles found by searching Apple's Knowledge Base.)

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suchi ~ Does your iPhone SE still have its original battery?

And what's the Maximum Capacity % here?...

Settings > Battery > Battery Health & Charging

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suchi98 Said:

"Audio freezes frequently while watching videos: While watching YouTube/Netflix or watching any video on my iPhone SE 2 nd generation,audio freezes goes on mute for sometime and again audio plays for 3-4 second and then goes on mute.[...]"

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Troubleshooting Lagging Apps:

See if you need to clear space. With little free space, apps can lag. Perform the following...

Troubleshooting iPad Storage:

Internal storage cannot be upgraded. It is what it is. So, the maximum internal storage capacity never increases, even if you upgraded your iCloud plan. Learn More here: What's the Difference Between Device Storage and iCloud Storage? Apple Support

So, what to do...

Clear Space Using my User Tips:

• How to Clear Space from your Mobile Device, and What to Clear: - User Tip. You may have too much installed, and need to clear space. So, see my user tip: 
• How to Clear "Other" in your iPhone's Storage - Use Backup - User Tip. Caches would be being used for remembrance of application use. It is essentially the same for an iPad: Backup your iPad, and then restore your iPadfrom the backup you've just created. All System Data will delete.

suchi98 Said:

"I have enough free space.: 34.5 GB of 64 GB is used."

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See the above reply by @Alancito

Resources are being swollen up. So, with 82% Battery Health, it's time for a new battery. Apple recommends you Geta new battery, when the Battery Health reaches 80% or less.