If you are using LYF mobile phone and facing any problem with your device then you can approach LYF Customer Care number and get it repaired at the nearest LYF Service center.
LYF Customer Care Number is 18008909999
Above number 1800-890-9999 is a Toll Free Number you can talk to their customer support 24X7 from Monday to Sunday. Alternativey you can also approch to the team of LYF experts via email firstname.lastname@example.org and they will respond back with in 24 hours.
Check this link for Finding a LYF Service Center https://www.mylyf.com/lyf/portal/service-center-locator