1. Hydration Running Belt by Camden Gear - Fits iPhone 6 Plus - with 2 BPA Free Water Bottles (Click Link to Check Price on Amazon)
Editor's Rating : 9 out of 10
ADJUSTABLE FIT: Fits waist sizes up to 43". The velcro strap lets you adjust the fit to it sits perfectly on your waist without bouncing.LARGE ENOUGH POCKETS: This is probably your main concern. The pouch is large enough to fit most cell phones. Even the large beasts :-) Like the iPhone 6, 6+, 6S plus 5s, Samsung Galaxy S5, S4, HTC One X. Beware though, if you have monster case like the OtterBox, it will be a tight fit. Best to take it off. Your credit cards and ID's will also fit in the black pocket. The belt also has 4 elastic straps which are great for hanging other things - keys, race bibs, gel packs.

2. TETON Sports Trailrunner 2 Liter Hydration Backpack Perfect for Biking, Running, Hiking, Climbing, and Hunting; Black (Click Link to Check Price on Amazon)
Editor's Rating : 9.5 out of 10
LIGHTWEIGHT: Weighs less than a pound (0.9 pounds) A great backpack for men, women and youth to stay hydrated

3. iRainy Neoprene Water-Proof Hydration Running Belt W Touchscreen Zipper Pockets Fitness Workout Belt with Two 12oz BPA-Free Leak-Proof Water Bottles Belt Fits All Smartphones (Water Bottle Belt) (Click Link to Check Price on Amazon)
Editor's Rating : 8.9 out of 10
1. LIGHTWEIGHT CONSTRUCTION - iRainy running belt has no bouncing, chafing or discomfort even on your long distance runs. And it doesn't add any bulk either, so you won't get weighed down while running.2. LARGE ENOUGH POCKETS - Zipper pouch is large enough to fit most cellphones. Like iPhone 6, 6+, 6s, Samsung Galaxy S6, Note 5 etc. (Beware if you have a thick phone case, it would be a little tight fit. Best to remove it.) Also, this pocket can carry your keys, cards, cash, wallet along with you to keep them secure.

4. Hydration Belt for Running with Water Bottles (2x BPA-free 10 Oz) Fits iPhone 6s plus- Soft Neoprene Fuel Belt for Running,Race,Marathon,Hiking- Men & Women Runners belt with Water bottles (Blue) (Click Link to Check Price on Amazon)
Editor's Rating : 9.7 out of 10
NO SLIP, BOUNCE, OR RUB with ADJUSTABLE NYLON STRAPS: This Runners Belt/Fuel Belt with super soft, lightweight Neoprene and anti-slip inner layers make sure there is no slip, bounce, rubbing, or chafing while running for the best sung fit. This belt fits most waist sizes (28" to 38") with adjustable nylon straps and strong buckle clip.NO POCKET IN YOUR RUNNING SHORTS? No problem. This running hydration pack fits all smart phones (even iPhone 6 plus) with separate inner pocket and carabiner to prevent scratches from keys. Top zipper makes storing and retrieving you valuables easy and secure.

5. Hydration Belt by X Fit Factor - Adjustable Running Fuel Belt with Two BPA-free 10 Ounce Water Bottles for Runners - Fits iPhone 6 Plus - No Slip, No Bounce, No Rubbing (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
LIGHTWEIGHT, SUPERIOR QUALITY & SMART DESIGN - The premium quality X Fit Factor Hydration Belt is made of lightweight waterproof neoprene even the zipper is of superior quality and is sure to work smoothly for way longer. The best part is the phone pocket includes a Hole for Earphone Cord to let you enjoy the music.