ninathenana, what model of mobile phone are you using and what does the error message actually say? Your phone could be trying to use Google's voice search app, the Google search bar on Chrome may not be working, Play store may have crashed, Gmail may need you to re-enter your account password. Google takes many forms on smartphones, unless you know which one is complaining, you will find it difficult to fix. If you can narrow it down, there may be some help available on this forum (or you could go into a mobile phone shop that sells phones that use your provider's network and ask them to help, they are usually pretty good at sorting out customer's phone problems).