[HOW TO] Fix HTC SmartSync wifi/mobiledata disabling in deep sleep - Sprint HTC EVO 4G LTE

Thanks to Sgt.Slaughter for pointing out this fix:
http://forum.xda-developers.com/showpost.php?p=26960096&postcount=104
It would be nice if rom developers could add these fixes to their roms, or if some good Samaritan could create those fixes for latest version of existing roms as a separate download.
Here are quotes from the author of the fix:
OK, I've read most of this thread and had already tried all the non-dev options including "hidden" power management menus, always on data, unchecking the "put data connections to sleep", and so on. Nothing worked. I was having the same problem with my Evo 3D ROM and it was repeatable: set the time manually to something like 3am, put the phone down, and in about 20 minutes, you could watch the phone drop from the router. Turn the screen on and NO data connection. I wanted this solved because I need a consistent data connection even at night, so I went to work. After examining some logcats, I came to this thread because I found that what was disconnecting the data connections was "Smart Sync" and this thread came up in a Google Search. Turns out Smart Sync IS the culprit. How I fixed it in my ROM...
The command to disconnect is coming from /system/app/Settings.apk. Decompile that apk with apktool and here's what you have to do:
You need to make mods to two files in the decompiled smali:
- com/android/settings/framework/activity/powersaver/SmartSyncDataLinkTurnOffReceiver.smali
- com/android/settings/framework/activity/SmartSyncDataLinkTurnOffReceiver.smali
In those two smali files, we need to kill these two methods:
- SetAlarmTurnOffMobileDataLink
- SetAlarmTurnOffWifiDataLink
We do that by simply putting a "goto" command near the top and the corresponding :goto label at the bottom. Example:
.method public SetAlarmTurnOffMobileDataLink(Landroid/content/Context;I)V
.locals 11
goto :goto_0 <--- put this line right under the "locals" declaration
...
and at the bottom of that same method, put in the goto label:
...
:goto_0 <--- put this line right before "return-void"
return-void
.end method
That's it. Recompile and push the Settings.apk back to your /system/app folder and chmod the file 644. I realize that's not "common jargon" but anyone familiar with apktool and doing mods will be able to help you. I did it on my ROM and hopefully the above will be enough info to help anyone do the same. After the above change, my phone stayed online all night with no data dropping. Even better, it didn't appear to draw ANY more power than with this hard coded crap enabled. So I hope this helps.
Seems like there should be some way to turn off "smart sync", or at least the tendency for "smart sync" to completely cut off your data connection. If someone finds such a method in the settings somewhere, I'll feel a bit foolish, but given that we're at page 30 in this thread with no solution, I kinda doubt that'll happen. Of course, there are no guarantees that this will work on all platforms just because it worked on the Evo 3D, but I think it will given the code.
Also, there are obviously multiple ways to do the above job. You could delete all the code in the entire function and just leave it with "return-void". I choose to "jump around" the code, rendering it dormant just because I prefer to leave the (now dormant) code there should I choose to go back in the future and look at what WAS being done. That's just personal preference.
Edit: I found more junk you have to remove to solve this completely. See this post.
Mike
Originally Posted by mikeyxda View Post
I actually found more code involved in the data link shutdown. My solution on page 30 worked most of the time. If you shut the screen off after midnight, it'd keep a connection all night. However, I found that if you shut the phone's screen off before midnight, say 11pm, and it had been sleeping a while and passed the midnight marker while the screen was already off, it'd shut down: again from 12am to 7am. I found the culprit with some sniffing of the logcat. As an addendum to my prior solution, to get rid of this crap completely, you have to kill (comment) all instances of these two method calls in the power saver and smart sync smali's (again, these are in Settings.apk):
setmobiledataenabled
setwifienabled
In the Evo 3D ROM, I found these in the following files in com\android\settings\framework\activity\powersaver :
PowerSaverModeReceiver.smali
SmartSyncDataLinkTurnOffReceiver.smali
SmartSyncIntentService.smali
SmartSynServiceReceiver.smali
In those files, just put a # at the front of every line that has starts with "invoke" and ends with setmobiledataenabled or setwifienabled in the same line. These methods are used in many of the smali files and many of them are fine, but in my eyes, they should never be called from the power saver or smart sync code because I don't want those objects affecting my data connection: only bad can come of that. I tested multiple times and now the data connection no longer drops as it passes the midnight barrier.
I even found some occurrences of setwifienabled in SystemUI.apk and killed those too (only the ones involved in power saver) for good measure. They're in:
PowerSaverOperation.smali in \com\android\systemui\power
Mike
Click to expand...
Click to collapse
The original post and the follow up are here.
http://forum.xda-developers.com/showpost.php?p=26262473&postcount=292
Reading further into the thread confirms that these fixes do indeed fix the problem.

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Thank you soooo much

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Thanks! I really hope this is a step in the right direction for this EXTREMELY frustrating bug!
Mine will drop wifi/data even when its NOT sleeping.

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not seeing that line ".locals 11"
or not finding "com/android/settings/framework/activity/SmartSyncDataLinkTurnOffReceiver.smali"

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Rydah805 said:
not seeing that line ".locals 11"
or not finding "com/android/settings/framework/activity/SmartSyncDataLinkTurnOffReceiver.smali"
Click to expand...
Click to collapse
It could be a .register instead of a .local
You can easily change all .registers to .locals by adding "-l" into your baksmali cmd (obviously remove the quotes)
Instead of searching for the ".locals 11" search for the actual .method
As for "com/android/settings/framework/activity/SmartSyncDataLinkTurnOffReceiver.smali" its
"com/android/settings/framework/activity/powersaver/SmartSyncDataLinkTurnOffReceiver.smali"
Notice the /powersaver
Sent from my EVO using Tapatalk 2

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one_love_420 said:
It could be a .register instead of a .local
You can easily change all .registers to .locals by adding "-l" into your baksmali cmd (obviously remove the quotes)
Sent from my EVO using Tapatalk 2
Click to expand...
Click to collapse
Thanks! It is a .register.
Here is the stock code:
Code:
.method public SetAlarmTurnOffWifiDataLink(Landroid/content/Context;I)V
[COLOR="Red"].registers 12[/COLOR]
.parameter "context"
.parameter "SettingTime"
.prologue
const/4 v8, 0x0
.line 1198
invoke-static {}, Ljava/lang/System;->currentTimeMillis()J
move-result-wide v2
.line 1200
.local v2, now:J
const-string v5, "alarm"
invoke-virtual {p1, v5}, Landroid/content/Context;->getSystemService(Ljava/lang/String;)Ljava/lang/Object;
move-result-object v0
check-cast v0, Landroid/app/AlarmManager;
.line 1202
.local v0, alarmManager:Landroid/app/AlarmManager;
new-instance v1, Landroid/content/Intent;
iget-object v5, p0, Lcom/android/settings/framework/activity/powersaver/SmartSyncDataLinkTurnOffReceiver;->SMARTSYNC_AP_TURN_OFF_WIFI:Ljava/lang/String;
const/4 v6, 0x0
const-class v7, Lcom/android/settings/framework/activity/powersaver/SmartSyncDataLinkTurnOffReceiver;
invoke-direct {v1, v5, v6, p1, v7}, Landroid/content/Intent;-><init>(Ljava/lang/String;Landroid/net/Uri;Landroid/content/Context;Ljava/lang/Class;)V
.line 1204
.local v1, intent_wifi:Landroid/content/Intent;
invoke-static {p1, v8, v1, v8}, Landroid/app/PendingIntent;->getBroadcast(Landroid/content/Context;ILandroid/content/Intent;I)Landroid/app/PendingIntent;
move-result-object v4
.line 1205
.local v4, pendingIntent:Landroid/app/PendingIntent;
mul-int/lit16 v5, p2, 0x3e8
mul-int/lit8 v5, v5, 0x3c
int-to-long v5, v5
add-long/2addr v5, v2
invoke-virtual {v0, v8, v5, v6, v4}, Landroid/app/AlarmManager;->set(IJLandroid/app/PendingIntent;)V
.line 1207
sput-object v4, Lcom/android/settings/framework/activity/powersaver/SmartSyncDataLinkTurnOffReceiver;->mPendingIntent_APTurnOffWifi:Landroid/app/PendingIntent;
.line 1209
[COLOR="Red"]return-void[/COLOR]
.end method
Would this work:
Code:
.method public SetAlarmTurnOffWifiDataLink(Landroid/content/Context;I)V
.registers 12
[COLOR="Red"]goto :goto_0[/COLOR]
.parameter "context"
.parameter "SettingTime"
.prologue
const/4 v8, 0x0
.line 1198
invoke-static {}, Ljava/lang/System;->currentTimeMillis()J
move-result-wide v2
.line 1200
.local v2, now:J
const-string v5, "alarm"
invoke-virtual {p1, v5}, Landroid/content/Context;->getSystemService(Ljava/lang/String;)Ljava/lang/Object;
move-result-object v0
check-cast v0, Landroid/app/AlarmManager;
.line 1202
.local v0, alarmManager:Landroid/app/AlarmManager;
new-instance v1, Landroid/content/Intent;
iget-object v5, p0, Lcom/android/settings/framework/activity/powersaver/SmartSyncDataLinkTurnOffReceiver;->SMARTSYNC_AP_TURN_OFF_WIFI:Ljava/lang/String;
const/4 v6, 0x0
const-class v7, Lcom/android/settings/framework/activity/powersaver/SmartSyncDataLinkTurnOffReceiver;
invoke-direct {v1, v5, v6, p1, v7}, Landroid/content/Intent;-><init>(Ljava/lang/String;Landroid/net/Uri;Landroid/content/Context;Ljava/lang/Class;)V
.line 1204
.local v1, intent_wifi:Landroid/content/Intent;
invoke-static {p1, v8, v1, v8}, Landroid/app/PendingIntent;->getBroadcast(Landroid/content/Context;ILandroid/content/Intent;I)Landroid/app/PendingIntent;
move-result-object v4
.line 1205
.local v4, pendingIntent:Landroid/app/PendingIntent;
mul-int/lit16 v5, p2, 0x3e8
mul-int/lit8 v5, v5, 0x3c
int-to-long v5, v5
add-long/2addr v5, v2
invoke-virtual {v0, v8, v5, v6, v4}, Landroid/app/AlarmManager;->set(IJLandroid/app/PendingIntent;)V
.line 1207
sput-object v4, Lcom/android/settings/framework/activity/powersaver/SmartSyncDataLinkTurnOffReceiver;->mPendingIntent_APTurnOffWifi:Landroid/app/PendingIntent;
.line 1209
[COLOR="Red"]:goto_0[/COLOR]
return-void
.end method
or would i have to change .register to .local?

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Rydah805 said:
or would i have to change .register to .local?
Click to expand...
Click to collapse
You do not have to, I personally do it as a habit.
java -jar baksmali.jar -l -b -o /smali/ classes.dex
That is the cmd I do, that removes smali debugging lines and does the change to locals. That makes the classes.dex smaller when smali back to classes.dex and changing to locals helps when adding in tweaks and additional code.
Sent from my EVO using Tapatalk 2

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can anyone prove this workks?

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ticklemepinks said:
can anyone prove this workks?
Click to expand...
Click to collapse
I got it applied, but need more time to test.so far so good.
Check Me Out On The Google Play Store!!!
​
Sent From My HTC Evo 4G LTE, On The Now Network From Sprint!

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Could someone provide the modified settings.apk in odex format?

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sivarticus85 said:
Could someone provide the modified settings.apk in odex format?
Click to expand...
Click to collapse
Sure, gimme a couple hours.
Check Me Out On The Google Play Store!!!
​
Sent From My HTC Evo 4G LTE, On The Now Network From Sprint!

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soooo does this work?

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so i made the changes to:
com/android/settings/framework/activity/powersaver/SmartSyncDataLinkTurnOffReceiver.smali
but i cant find after i decompile: com/android/settings/framework/activity/SmartSyncDataLinkTurnOffReceiver.smali
any ideas?

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arodey said:
so i made the changes to:
com/android/settings/framework/activity/powersaver/SmartSyncDataLinkTurnOffReceiver.smali
but i cant find after i decompile: com/android/settings/framework/activity/SmartSyncDataLinkTurnOffReceiver.smali
any ideas?
Click to expand...
Click to collapse
Yea I couldn't either. So far seems fine.
Check Me Out On The Google Play Store!!!
​
Sent From My HTC Evo 4G LTE, On The Now Network From Sprint!

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Can anyone say if disabling smartsync has a noticeable effect on battery life?
Sent from my EVO using XDA

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kkohlmann said:
Can anyone say if disabling smartsync has a noticeable effect on battery life?
Sent from my EVO using XDA
Click to expand...
Click to collapse
If anything, better.
Check Me Out On The Google Play Store!!!
​
Sent From My HTC Evo 4G LTE, On The Now Network From Sprint!

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jayjam99 said:
Thanks! I really hope this is a step in the right direction for this EXTREMELY frustrating bug!
Mine will drop wifi/data even when its NOT sleeping.
Click to expand...
Click to collapse
Which has nothing to do with this fix.

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Rydah805 said:
If anything, better.
Click to expand...
Click to collapse
Wouldn't it actually be worse. Now, instead of sleeping after x amount of time, or after midnight, wifi is always on, so battery consumption should increase (hopefully only slightly).

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gpz1100 said:
Wouldn't it actually be worse. Now, instead of sleeping after x amount of time, or after midnight, wifi is always on, so battery consumption should increase (hopefully only slightly).
Click to expand...
Click to collapse
In theory this would be a sound assumption, however if your wireless signal is less than optimal your phone will be constantly searching for a data signal and thus increasing battery consumption. On the other hand if you have a strong wifi signal your phone will save battery by not having to constantly seek out a data connection.

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@thingnblah, your statement above is true with respect to more distant wifi AP's requiring more power to communicate than closer ones. However, in the case of the stock functionality, where wifi is completely shut down (even when set to never when sleeping), it doesn't matter how near or far the AP is. Wifi is shut down, so it makes no difference if it's a strong or weak wifi sign.