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I understand that the colour of the signal indicator tells me whether or not I've got a connection to Google servers or not, but what is the "H" that sometimes pops up?


Usually my indicator says "3G":


But, in addition to having an "H" now and again, sometimes it has no letters at all:


I assume this is telling something about what kind of data network I'm on, or not on, but what exactly is happening?

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marked as duplicate by Dan Hulme, Flow Apr 3 '14 at 20:27

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

I think H stands for HSDPA – Propeller Jul 11 '12 at 4:30
up vote 19 down vote accepted

It's HSDPA which if I'm not mistaken is referring to 3.5G.

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and you're using Cyanogenmod -- plain old Android doesn't display an H, at least mine doesn't. – offby1 Jul 11 '12 at 5:22
Actually, it does. Seems to depend on version. – Chris Stratton Jul 11 '12 at 5:25
@offby1 From my experience I have seen H since the first day I bought my first Android device, which was HTC Hero GSM. – Rashidi Zin Jul 11 '12 at 5:38
To be accurate, it means HSPA, which includes HSDPA (download) and HSUPA (upload). Also, if there is no letter, it means there's no data connection or it's trying to connect to one. – onik Jul 11 '12 at 9:25
or you're on wifi. – chromozonex Apr 3 '14 at 16:54

Let's state all the possible letters in the signal indicator, in descending speed:

  • LTE = Long Term Evolution (commonly and falsely known as 4G)
  • H+ = HSDPA Plus
  • H = either HSDPA (3.5G) or HSPA+ (3.95G), depending on your network provider
  • 3G = UMTS (3G)
  • E = EDGE (2.5G)
  • G = GPRS (2G)
  • (no letter) = voice only, no data connection

and also:

  • R = roaming (this means you're not on your home network)

(source for some of this.)

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There's also "4G" on my Nexus 5 running Lollipop (Optus, Australia). – Igby Largeman Nov 17 '15 at 6:15
My HTC One M7 also displays, 4G. I'm not sure if its LTE? – Zee Nov 18 '15 at 13:14

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