First, do Factory Reset of your handset to check if the problem is not software related. Note that you need to make a back-up since this procedure will delete all of your files.
If this does not fix the issue; visit the nearest Globe Store in your area for technical assestment.
Na factory reset ko na yun s4 ko at 7am then after the reset ok siya.gumagana na yun home button. But at 4:30pm my s4 not working the home button again... please help i monitor my phone at 2days... i hoping na maayos pa pero kelangan ko na ito dalhin s globe... na woworried lng ako kun mapapalitan b nila un s4?