Best Coverage!

AT&T

99.96%
Coverage

  • Plans From $65 to $85
  • Unlimited Talk & Text
  • Up To 100GB Premium Data & 30GB 4G Hotspot
  • Top Plan Includes HBO MAX
  • Up To 720p Streaming
Call 800-288-2020

View Plans & Pricing

T-Mobile

90.70%
Coverage

  • Plans From $60 to $85
  • Unlimited Talk & Text
  • Up To 50GB Premium Data & 20GB 4G Hotspot
  • Netflix And Quibi Free For A Year
  • Up To 1080p Streaming
Call 800-866-2453

View Plans & Pricing

Verizon

83.49%
Coverage

  • Plans From $70 to $90
  • Unlimited Talk & Text
  • Up To 75GB Premium Data & 30GB 4G Hotspot
  • Most Plans Include Apple Music and 1 Year Of Disney+
  • Up To 720p Streaming
Call 844-751-8735

View Plans & Pricing

Cellular Access In Keystone, SD


  • AT&T has the best cell phone coverage in Keystone.
  • Keystone, SD has an average of 68.54% coverage across the four major carriers.
  • Keystone is 307th in South Dakota for cell reception ahead of Hill City, Custer, Nemo, and Pringle, but behind Hermosa.
  • Roughly 18.81 square miles of Keystone has limited access to cellular data.
  • AT&T is ranked as the fastest provider in South Dakota.
  • Keystone has 15 cell towers within 25 miles of the city center.

Keystone Cellular Coverage Map


Cell Phone Coverage By ZIP In Keystone

ZIP Code Verizon ATT T-Mobile
5775183%100%90%

Cell Phone Towers Near Keystone, South Dakota

Licensee Address Height Tower Type
New Cingular Wireless PCS, LLCUnnamed Road, Custer, SD 57730112.8TOWER
New Cingular Wireless PCS, LLC23080 McCurdy Gulch Rd, Rapid City, SD 5770257.9POLE
Cellular, Inc. Financial Corporation14322 Co Hwy 6, Hermosa, SD 5774491.4TOWER
New Cingular Wireless PCS, LLC25110 Little Teton Rd, Custer, SD 5773054.9TOWER
Cellular, Inc. Financial Corporation1550 Skyline Dr, Rapid City, SD 577020

User Reported Dead Zones Near Keystone

Carrier Address Comment Date Added
T-Mobile731 I-90BLT Mobile Prepaid SIM Card2015
VerizonF D R 287There is no LTE what so ever. Sometimes some 3G. It takes about 5 minutes to send a text message. No iMessages at all. No calls at all. No data for internet and apps.2016
SprintGateway DrExtended service....data roaming only2019
Sprint610 State StNo data or calls.2019
Verizon417 Main StWeak signal in the city. Tower is 6 miles S, 1 mile W of Platte.2019
Data Provided By DeadCellZones.com

Cell Phone Stores Closest To Keystone, SD

Carrier Address Phone Directions
AT&T1325 Eglin St Ste. 200, Rapid City, SD, 57701605-341-3356Directions
Verizon36 E Stumer Rd, Rapid City, SD, 57701605-342-4500Directions
T-Mobile1301 Omaha St # 106, Rapid City, SD, 57701605-791-1481Directions