Apple India — iphone 6s network issue after battery replacement by apple authorized service center

Address: 560085

I’m having serious network issue in my iPhone 6s after battery was replaced in apple service center. Network signal is keeps dropping and shows weak signal always at all places. I gave it service center again, but issue was not rectified. This is so careless on part of Apple and Apple service center has failed to provide a solution.

I’m planning on a legal action for this issue.

Rectify and correct this issue soon failing which a legal case shall be filed.