"There was a line on my mobile's panel, so I took it to the Vivo service center. The staff there was very helpful and professional. To my surprise, they replaced my phone's panel for free in just one day! The new panel is crystal clear and excellent, and my phone's performance is back to how it was before. I sincerely thank Vivo for resolving the issue so quickly and at no cost. It was an excellent service experience highly recommended!!