Migrate from Samsung G3 to LG G3

Both phones running Android. Samsung: Android 4.1.2; LG: 5.0.1

I use gmail, so I expect my contacts and email should transfer to the new phone.

However, that leaves:
text messages (I've been using the default messenger app)
photos (I don't get how the gallery app seems to be a collection of numerous locations e.g. Camera, download, Bluetooth, DCIM, Facebook, Instagram, PicsArt, Viber Images, WhatsApp...

I'd like the text messages and photos to behave like gmail: transparently available from whatever device I use (will dropbox do that?  I saw someplace people were using gmail account to automatically backup text messages too, but that seemed more like a "backup" instead of being transparently accessible from any device?  Will Hangouts for text do it?)
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Ravi AgrawalCommented:
Have a look at these articles of mine..



They should point you in the right direction.

You can use Google Drive to backup your photos. Just needs a little bit of configuring.

There is an SMS addon (Mighty Text) in Google Chrome which will help you deal wtih SMS using Google Chrome https://chrome.google.com/webstore/detail/mightytext-sms-from-pc-te/dkfhfaphfkopdgpbfkebjfcblcafcmpi?hl=en

Good Luck,

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SAbboushiAuthor Commented:
Thanks Ravi for your articles.  They look helpful for backup purposes for the the data that doesn't sync automatically (i.e. gmail contacts and messages).

My objective is to see how I can sync the data instead of backup/restore.
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