Acrocephalinae - Juvenile Warbler

I am confused with the ID of this bird.
Posing like Tailorbird that I usually photographed in my backyard, but the colour of the head is grey here. Could it Yellow-bellied Prinia?
Finally, I got the ID when I saw Madibirder posting the same species.

Final ID: Yellow-bellied Warbler (Abroscopus superciliaris) - Juvenile

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