Only the F160K variant will work with Warid or Zong 4G.
3G will work on both.
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Here are two lists I've made, one contains a list of Samsung Galaxy S devices, the other has a list of Galaxy Note devices (Note 5 not included).
They include the variants that are compatible with our Pakistani LTE frequencies (Band 3).
If you use Warid or Zong, and you're out to buy a new phone, and it's Samsung, take a look at this list:
Samsung Galaxy S phones -
HERE
Samsung Galaxy Note phones -
HERE
@
abobobilly Check these out and add them to the main post if you want to to stop the 'Will warid 4g work on my galaxy s4' questions.