I think these 2 phones comparison has been beaten to death. You decide for yourself. For me, it is no doubt Note 4 is better with overwhelming tangible evidences as follows:-
1. Screen
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Bigger 5.7in (7 percent more area) in smaller phone size
- Can use the screen with gloves.
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QuadHD (500+ vs 400 ppi on 6+), better color, constrast and
sunlight readibility
http://www.displaymate.com/Color_Accuracy_ShootOut_1.htm
2. Camera/Video
- 16MP and 5MP wide-angle front (vs 8MP and 1.2MP for 6+)
- upto 4K video with stereo sound record (vs 1080p mono)
- camera software with full manual settings control and many more shooting mode (e.g. selective focus, dual camera shot, super wide angle etc)
- Better camera overall (front & back):
http://www.phonearena.com/reviews/C...peria-Z3-LG-G3-Galaxy-S5-Galaxy-Note-3_id3822
http://www.phonearena.com/news/Note...ptical-Image-Stabilization-comparison_id63122
http://www.phonearena.com/news/The-...3-vs-Xperia-Z3-vs-Galaxy-S5-vs-One-M8_id63221
http://www.straitstimes.com/digital...galaxy-note-4-vs-apple-iphone-6-plus-20141016
http://www.imore.com/iphone-6-plus-vs-galaxy-note-4-camera-comparison
http://www.gottabemobile.com/2014/11/08/samsung-galaxy-note-4-vs-iphone-6-plus-camera-comparison/
3. Battery
- Better battery life (from these reviews)
http://www.gsmarena.com/iphone_6_plus_vs_galaxy_note_4-review-1161p3.php
http://www.phonearena.com/reviews/Samsung-Galaxy-Note-4-vs-Apple-iPhone-6-Plus_id3815/page/4
- Removable battery (for uninterrupted use + cheap to replace)
- fast charging (50% in half-hour) and super-power saver mode (last upto 24hrs on 10% battery)
4. Hardware
- 160Gb memory with 128Gb SD card at fraction of cost compared to 6+.
- USB Host: plug in disk/thumbdrive directly to phone and use as drives. Also compatible with other USB plug-play devices like keyboard, game controller etc.
- DLNA/Miracast/MHL to stream media or mirror screen at full resolution to compatible TV without need for expensive and bulky AppleTV box.
- Unrestricted NFC for 3rd party customization. e.g tap NFC sticker in car will auto turn on BT, start music playing, set the phone to "drive" mode and activate turn-by-turn navigation app.
- Unrestricted WIFI-Direct and BT-transfer support to easily share files between heterogenous phone platforms.
- IR Blaster - universal infra-red remote control
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Heart, Sp02 and ultra-violet sensor for health
- Uses non-proprietary micro-USB (i.e. easily available cables)
and micro-SIM (easy swapping of SIM card)
- Multi-use LED light indicator for events (missed call/sms etc). Also can have repeated sound reminders for missed call/sms/calendar/other events.
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Dedicated Back + multi-task key to easily navigate UI.
4. S-Pen + Nice to Have
- Pressure sensitive hand writing with S-Pen. Easily take note anywhere by just sliding out pen. Drag selection of text/clip image easily. Advance copy-paste and OCR.
- Smart Stay will keep the screen on if it detects that you are looking at the screen. Smart Rotation to rotate the screen based on the orientation of your eyes and sensor. Reduces all the unwanted screen rotations.
- Motion/Gesture control - flip over to silent sound, tilt to zoom, shake to unlock phone, etc
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Answer phone by pressing Home key.
- Always listening mode for Google Now/S-Voice (i.e. can wakeup phone from standby with voice). Other like sound/baby detector. Sound activated camera.
5. Multi-tasking + Multi-Windows
- Run multiple apps in multiple windows at same time. Popup window for video playback or chat session.
- Good multi-tasking performance (vs 6+)
https://www.youtube.com/watch?v=GVkaY-F6Zhs
- Intent/event activated multi-tasking. The ability of apps to auto-run in the background when certain events (e.g. receive sms, calendar etc) happen is sorely lacking in iOS. With this capability there are thousands of automation scenarios that can be done in Note 4 but not in 6+. Just a few examples:
* when a call is started/received, a call recording app is automatically activated to record the ongoing conversation.
* when the cell ID changes to one near the location of pickup, the app will auto send an SMS to the person to get ready.
* when an sms arrives from a business contact, an app will write the sms details into a shared google calendar so other people can see.
* when a calendar meeting event starts/ends, an app will auto turn the phone to vibrate and back again. Another app will auto send SMS wishes if those events are birthday/anniversary.
* Set phone to only allows calls from "Family" contact group from 12-7am. Plus auto reject any calls that is in the blacklist. You can set-up multiple schedules (much more advance "do not disturb")
6. User Interface + Customization
- Many Launchers + Theming capability
- Able to SEAMLESSLY replace any stock apps with 3rd party apps to upgrade or improve functionalities.
- Faster scrolling speed -
http://www.youtube.com/watch?v=EH1GDLunomY
- Able to set a reading font size in browser. When zoomed in, text always appear at this specified font size. Text is also reflow to fit the screen for easy reading without side-scrolling.
- Supports many more media format (avi, mkv, divx) directly without tedious conversion via Itunes. (i.e. transfer files into phone storage via bt,wifi,cloud etc and play).
- Ability to attach multiple files of any types to email (incl. re-edit re-attach). Ability to edit/view any attachments as long as there is a installed app that handles the file type.
- File Systems - Files copied to phone storage are accessible by any built-in/3rd party apps. Includes ability to download/save any files from any sources (browser, apps etc) into the phone storage.
- Easily share any files/contents via any registered share providers (BT, Wifi, cloud storages, social networks, usb etc). You can add new share streams easily (by installing apps).
- Direct dial/sms with picture icon on desktop or in folder for quick one touch operation. Plus ability to create shortcuts to any files/contents for quick one-touch access.
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Ability to use "live" wallpaper (in both lock and main screen) or ability to auto-change static wallpaper periodically. Plus use transparent icons without labels on desktop screen.
- Easily set custom ringtone. Just copy rintone files to phone via any available means (bt, wifi, cloud etc). It will show up in ringtone selection. No need to go thru tedious stps (like in iOS)