[Sony Xperia E1] Zsenyka:
As it's known, by Sony's fault the Xperia E1 eats more RAM than it should. So here's a method to gain more free RAM.

Requirements:

- root

- Disable Service app: https://play.google.com/store/apps/details?id=cn.wq.disableservice&hl=hu

Launch the app, go to System and search for Google Play Services. Here's a list of the services that can be disabled safely:

AccountRecoveryBackgroundService

AccountsChangedService (if you use Google Pay don't disable)

ActivityRecognitionService (it's for fitness apps)

AdvertisingIDNotificationService

AdvertisingIdService

AnalyticsIntentService

AnalyticsService

AnalyticsService

ApiService (it's for Google Drive, don't disable is if you use it)

AppMeasurementService

AutoBackupGcmTaskService (google backup service)

AutoBackupHeavyWorkService (google backup service)

AutoBackupService (google backup service)

AutoBackupSynService (google backup service)

AutoBackupWorkService (google backup service)

BackupAccountManagerService (google backup service)

BackupAccountNotifierService (google backup service)

BackupTransportMigratorService (google backup service)

BluetoothClientService (it's for Android Wear if you use it don't disable)

BluetoothServerService (it's for Android Wear if you use it don't disable)

BtleCentralService (it's for Android Wear if you use it don't disable)

CachingOperationService (it's for Google Drive)

CardArtService

ChatStatusUpdateService

CheckInService (if you use Google Pay don't disable)

ChromeSynApiService (if you use Chrome don't disable)

ChromeSynOperationService (if you use Chrome don't disable)

ClearHelpHistoryIntentService

CollectSensorService (for fitness apps)

CrashReportIntentService (it's a feedback service)

DataRemovalService

DebugIntentService (for fitness apps)

DeleteHistoryService (it's for Location services/GPS don't disable if you use them)

DeviceConnectionServiceBroker

DisableAutobackupIntentService

DriveAsyncService (for Google Drive)

FeedbackAsyncService (it's a feedback service)

FeedbackService (it's a feedback service)

FetchStorageKeyService (if you use Google Pay don't disable)

FetchStorageKeyTaskService (if you use Google Pay don't disable)

FingerprintScannerIntentService

FitBleBroker (for fitness apps)

FitCleanupService (for fitness apps)

FitConfigBroker (for fitness apps)

FitHistoryBroker (for fitness apps)

FitInternalBroker (for fitness apps)

FitProxyBroker (for fitness apps)

FitRecordingBroker (for fitness apps)

FitSensorsBroker (for fitness apps)

FitnessSyncAdapterService (for fitness apps)

FloorCahngeRecognitionService (for fitness apps)

FusedLocationService (it's for Location services/GPS don't disable if you use them)

FusedProviderService (it's for Location services/GPS don't disable if you use them)

GamesAndroidServiceProxy (don't disable if you use Google Play Games)

GamesAsyncServiceProxy (don't disable if you use Google Play Games)

GamesSignInIntentServiceProxy (don't disable if you use Google Play Games)

GamesSignInServiceProxy (don't disable if you use Google Play Games)

GamesSyncServiceMainProxy (don't disable if you use Google Play Games)

GamesSyncServiceNotificationProxy (don't disable if you use Google Play Games)

GamesUploadServiceProxy (don't disable if you use Google Play Games)

GcmService

GeocodeService (it's for Location services/GPS don't disable if you use them)

GeofenceProviderService (it's for Location services/GPS don't disable if you use them)

GmsCoreStatsService

GoogleLocationManagerService (it's for Location services/GPS don't disable if you use them)

GoogleLocationService (it's for Location services/GPS don't disable if you use them)

ImmediateProcessReportsService

ImmediateRemoteReportsRefreshService

KeyguardDismissedService (if you use Google Pay don't disable)

LegacyBugReportService

LocationSharingSettingInjectorService (it's for Location services/GPS don't disable if you use them)

LogMessageService (if you use Google Pay don't disable)

LogMessageUploadService (if you use Google Pay don't disable)

MetadataSynService (for Google Drive)

MetricsReportService

MonitorService (don't disable if you use Google Play Games)

NfsSecurityKeyService (E1 doesn't have NFC so it's useless)

PanService

PaymentBundleRefreshService (if you use Google Pay don't disable)

PaymentBundleService (if you use Google Pay don't disable)

PlayLogBrokerService (don't disable if you use Google Play Games)

PlaylogIntentService (don't disable if you use Google Play Games)

PlayLogMonitorIntervalService (don't disable if you use Google Play Games)

PlaylogReportingService (don't disable if you use Google Play Games)

QosUploaderService (don't disable if you use Google Play Games)

RecoveryService

ReportBatchedMetricsService

ReportingAndroidService (it's for Location services/GPS don't disable if you use them)

ReportingSyncService (it's for Location services/GPS don't disable if you use them)

RequestUploadService (don't disable if you use Google Play Games)

RoomAndroidServiceProxy (it's for Location services/GPS don't disable if you use them)

SelfDestructService (if you use Google Pay don't disable)

SendService (it's a feedback service)

SetBackupAccountService (google backup service)

SnapshotEventServiceProxy (don't disable if you use Google Play Games)

StorageKeyCacheService (if you use Google Pay don't disable)

StoreMaintenanceService (for fitness apps)

SyncAdapterService (for Google Drive)

SyncReceiverService (if you use Chrome don't disable)

SyncService (if you use Chrome don't disable)

TapAndPayGcmRegistrationService (if you use Google Pay don't disable)

TapAndPayIntentService (if you use Google Pay don't disable)

TapAndPayNotificationService (if you use Google Pay don't disable)

TapAndPayService (if you use Google Pay don't disable)

TapEventService (if you use Google Pay don't disable)

TapLocationReportingService (if you use Google Pay don't disable)

TokenizePanService (if you use Google Pay don't disable)

TpHceService (if you use Google Pay don't disable)

TransactionPullService

TransctionReplyService

UpdateGunsReadStateForNotificationService (if you use Google Pay don't disable)

UploaderService (don't disable if you use Google Play Games)

UsageReportingService

VoiceInlockIntentService

VoiceUnlockService

WearableControlService (it's for Android Wear if you use it don't disable)

WearableService (it's for Android Wear if you use it don't disable)

WearableSyncService (for fitness apps)

YouTubeAsyncServiceProxy

YouTubeServiceProxy

I wrote down what are the services for, so if you use Google Drive or Google Play for example, you can choose what to keep. After disableing all of the above, I got 131 MB free ram. It can happen that after boot an error message comes app saying that Google Play Services stopped working. Just click ok, it will restart immediately. If somethings not working for you, just re-enable the services and restart the phone.