My earbuds are charged, blue tooth is on but not synching. Has anyone else had this problem?

Try resetting your earbuds if you have taken off the protective film already on your buds connector pins. Put them in the case and hold the touch controls at the same time on each bud for 8 seconds you'll see the case flash 3 times. You should have them reset at this point. Then pair again. Hope this helps

can only one at a time be paired and used with a phone?

If your thinking to just use one and leave the other in the case then yes, I alternate mine in and out all the time, but if your thinking to keep one and then give one to friend to connect to a different device, I don't think so...

Do these stream in AAC codex?

They are supported by both aac when not making calls and such when making calls or using mic

If a call is coming in, is there a button to tap on the earbuds to accept it or whatever do you need to answer using your phone?

Both earbuds have touch surfaces.

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soundcore by Anker A20i True Wireless Earbuds, Wireless Headphones, Bluetooth 5.3, Adjustable EQ, 28 Hours Playtime, Waterproof, 2 Microphones with AI, Individually Usable (White/Purple)

soundcore by Anker A20i True Wireless Earbuds, Wireless Headphones, Bluetooth 5.3, Adjustable EQ, 28 Hours Playtime, Waterproof, 2 Microphones with AI, Individually Usable (White/Purple)

Product ID: 724666307

Details

Brand
soundcore
Colour
white-purple
Ear Placement
In Ear
Form Factor
In Ear
Noise Control
Passive Noise

🎧Bluetooth 5.3 for ultra-stable connection

💧IPX5 waterproof earbuds for active lifestyles

🔋28 hours total playtime with fast charge

Description

🎶 Elevate your sound game — stay connected, comfortable, and in control.

ENDURANCE THAT KEEPS UP - 9 hours per charge, 28 hours with case—never miss a beat on the go.
CUSTOM TUNED SOUND EXPERIENCE - 22 EQ presets + BassUp let you craft your signature sound.
SEAMLESS SMART CONNECTIVITY - Bluetooth 5.3 auto-reconnects instantly; use earbuds individually or together.
AI POWERED CRYSTAL CLEAR CALLS - Dual mics with AI noise isolation ensure your voice cuts through any noise.
LIGHTWEIGHT COMFORT ALL DAY WEAR - Ergonomic design means music marathons without ear fatigue.

The Soundcore by Anker A20i True Wireless Earbuds combine cutting-edge Bluetooth 5.3 technology with 28 hours of total playtime and customizable sound via 22 EQ presets including BassUp. Designed for active professionals, they offer IPX5 water resistance, AI-enhanced dual microphones for crystal-clear calls, and ergonomic lightweight comfort. Fast charging delivers 2 hours of playback from just 10 minutes of charge, while the compact case and individual earbud use keep you flexible and ready for any situation.

Specifications

ASIN	B0BTYC61K8
Age Range Description	Adult
Audio Driver Type	Dynamic Driver
Battery Average Life	9 Hours
Battery Charge Time	1E+1 Minutes
Bluetooth Version	5.3
Box Contents	Cable, Ear tips size S/M/L, User Manual, User manual (English language not guaranteed), Wireless Charging Case
Brand Name	soundcore
Colour	white-purple
Compatible Devices	Smartphones, Tablets, Laptops, Bluetooth-enabled Devices
Control Method	App
Customer Reviews	4.4 4.4 out of 5 stars (15,329)
Earpiece Shape	Bud
Enclosure Material	Plastic, Silicone
External Testing Certification	/
Headphone Form Factor	In Ear
Headphone Jack	No Jack
Headphones Ear Placement	In Ear
Is Autographed	No
Is Electric	No
Item Weight Unit of Measure	0.09 Pounds
Manufacturer	Anker
Model Name	A3948
Model Number	A3948
Network Connectivity Technology	Wireless
Noise Control	Passive Noise Cancellation
Product Features	AI-supported Voice Isolation, Waterproof, Fast Charging, Bluetooth 5.3
Series Number	2
Specific Uses For Product	nMusic
UPC	194644124441
Water Resistance Level	Water Resistant
Wireless Technology Type	Bluetooth

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