My Problem
Wife's 3GS wouldn't hold a charge.
My Fix
Repair went smoothly except connector #6 took numerous tries before it would finally snap back into place reassembling phone.
My Advice
Overall iFixit experience was highly satisfying- replacement battery kit arrived quickly and online instructions were thorough though pix of connector unsnapping could have higher resolution. Be sure and have spudger for manipulating tiny electrical connectors.
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