How to Fix the Epic Ring Lag

[milominderbinde]

The screenshots below are from an EVO. Epic owners, would you test these steps below and see if these are the same on your phone? In particular, do you see these smae screens? Thanks!

Call your phone to see how many rings it takes for your phone to actually ring. How many rings was it? Want to fix it?

"Ring Lag" may be due to an out of date PRL, Roaming checking, and your Slot Cycle Index. (Sprint 11/1/09, PreCentral 8/09)

Update Your PRL
To make sure the Preferred Roaming List (PRL) is up-to-date: Tap Home > Menu > Settings > System updates > Update PRL. This makes sure that your phone is not looking for the wrong towers.

Turn off the Roaming ringtone
Tap Home > Menu > Sound settings > Roaming ringtone UNCHECK. This saves time because it no longer checks for Roaming.

Reduce your Slot Cycle Index to 1 or Even 0
Your Slot Cycle Index (SCI) is how long your phone waits before it "polls" to see if it is being called. An SCI of 0 is 1.28 seconds, 1 is 2.56, 2 is 5.12, 3 is 10.24 seconds, and so on. Your SCI defaults to a 2 or a 5.12 second delay!

A lower SCI can use more battery but most find little battery loss with an SCI of 1 or even 0. The screenshots below are for an EVO but other Sprint Android phones should be similar.

Reduce your Slot Cycle Index to 1 or even 0
1. Call Sprint and tell them that your phone does not ring right away and that you need your MSL (Master Subsidy Lock). Your MSL is your 6 digit password number.
2. Open your Phone app: Tap Home > Phone.
3. Dial ##DATA# (##3282#).
4. When the EPST menu comes up, Tap Edit Mode.

5. Enter your MSL as your Password such as 123456 and tap OK.

6. On the EPST screen, Tap Advanced.

7. Tap Slot Cycle Index.


8. Change the Slot Cycle Index to 1 (0 is faster but takes more battery)

Notice that the SCI of 0 is hidden at the top!

9. Tap Menu > Commit Modifications

and it will Reboot your phone for the changes to take effect.

Would you call your Epic again. How many rings does it take now?

Again, would you test these steps and see if these are the same on your phone? Are the screens the same?

Thanks!

Also see: Ring Lag Fix (SCI Method)

 

[ericdives]

##DATA# does not result in the EPST screen - it ends up at a "Data Programming" screen. Will poke around a bit.

EDIT:

My bad - but the "Advanced" screen does not result in the screen you show.

 

[milominderbinde]

##DATA# does not result in the EPST screen - it ends up at a "Data Programming" screen. Will poke around a bit.

EDIT:

My bad - but the "Advanced" screen does not result in the screen you show.

Help! Can anyone help find where this setting is in the Epic. It has to be there. I just don't have access to an Epic to find it...

 

[ericdives]

There's another thread where this is discussed. Apparently, for the Epic, you need to download a program called QPST:

http://forum.androidcentral.com/sprint-epic-4g/38809-slot-cycle-index.html

Bit of a bug - the forum doesn't seem to link to the URL correctly (no matter how I construct it) and I get a page not found.

Haven't downloaded the QPST program yet; don't have my USB cable with me at work ...