How can I take advantage of LTE on my Samsung Galaxy S4 purchased in the UK? I recently got a sim card for my S4 from AT&T and it is saying that it is under HSPA but I was told it is LTE compatible. The model number is GT-i9505 for this UK version. I understand this will be under non-certified servi

Does the Samsung Galaxy S4 SGH-I337 support VoLTE  aka  HDVoice ?

I was looking at purchasing a samsung galaxy S4, but I currently have a simple smart phone under the go phone place Unlimited talk and text and 2GB of data for $60 a month. Would I be able to take my sim card and switch it with the S4 and keep my number and still get the same plan?

I have spent all day trying to figure this out on my own. Samsung can't help. I downloaded Handcent, which was recommended. I changed the APN on someone else's recommendation. I have 3 different APN's and none work. I am all out of ideas. I just want to view photos sent to me via text message. Samsu

I want to recover my lost data from my telephone Samsung Galaxy S4, can you help me to do it?

So I updated my Galaxy S4 to Kit-Kat 4.4.2 and now the air gestures no longer work. I can't wave to answer my phone. I can't use quick glance. Even in the gallery or internet browser none of the guesture registers. I can see that the sensor is on by putting the phone in front of another camera, but

I need help!My phone is not getting connected to the networks in India. Bought the passport plan for $60 but my phone's giving error message "emergency calls only".When I try to go the network settings & try to manually connect to networks one by one, I get the message, "your SIM card does not allow

I have a smasung galaxy s4 and have had drooped calls and failed text messages since I got the microcell about 2 months ago. at&t replaced the microcell and still no luck. It starts and connects fine but consistently, sporadically drops calls.  When I catch it, the 3g blinks green. AT&

I bought my S4 in July of 2014, about a year ago, and ever since I've updated to 5.0.1 I've had nothing but issues. My phone randomly drops service. One minute I will have full service and 4G then the next minute, nothing. Sometimes it will randomly lose data connection. The only way to get it to co