if your mobile data is not working, try to check the ff:
1. APN Settings: Prepaid settings is http.globe.com.ph
2. The signal you are getting from the cellsite must be atleast 3G or HSPA+ or LTE signal so you can use your mobile data for chatting etc.
3. check your Mobile network mode, you may select the WCDMA only or 3G only or LTE/4G only for better connection.
4. Check your subscription status, you might have consumed the data allowance bundled to the GOUNLI500 promo you have registered.
Hope these help. Thanks