Hindi naman ako master pero, sana makahelp naman sayo kahit late na...
Diba gamit mo lte sim at 4g capable na phone at nasa lte area ka.. baka naman hindi ka nakaregister as lte promo..
Kung hindi ton try nyo ichange settings nyo:
1.Go to settings
2.Under wireless & networks, Click more...
3. Click mobile networks
4. Click preferred networks
5. Click your sim card
6. Now change the settings of network mode then save..
Kung di machange try and type *#*#*4636#*#* sa box kapag tatawag ka at magtatype ng no. same phone.. kung biglang nawawala yung titatype no copy and paste mo nalang..
At kung hindi pa rin....... (Smart lang to) Baka APN mo yan try nyo gumawa ng bagong APN at eto kung pano..
1. settings
2. more...
3. mobile networks
4. access point names (APN)
5. choose your sim...
6. add new APN..
7. name: kahit ano
8. APN : pili lang
a) usmartinet
b) EVOsmartinet
c) LTEsmartinet
d) airtelgprs.com
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sana makatulong naman ako
don't forget to like if it works!