My iPhone wont work stuck an apple logo

so last week on the top it said no services and then searching so i tried to restart it by pressing down the home button and lock and didn't do anything so i decide it to restart it with no success and then update and has been in iTunes mode for like almost a week and now i tried a lot of thing and now i press the home button and the a[apple logo is their and after 10 sec it shut off over and over and now it wont do anything i also charger it for almost 2 hours help and i took it to get repairs but it because of the 9.3