[LG V35 Questions & Answers] hachiroku:
https://www.t-mobile.com/content/da...nd-Towns.pdf/_jcr_content/renditions/original

band 71 still isn't available in any town near me in California per Jan 2019 list.

EDIT:

i take that back...

https://www.tmonews.com/2019/07/t-mobile-confirms-low-band-lte-upgrades/

as of July 2019

Midland City, AK
El Dorado, AR
Little Rock, AR
Chandler, AZ
Gilbert, AZ
Mesa, AZ
Phoenix, AZ
Scottsdale, AZ
Tempe, AZ
Tolleson, AZ
Tucson, AZ
Bakersfield, CA
Costa Mesa, CA
Lake Elsinore, CA
Los Angeles, CA
National City, CA
Orange Cove, CA
Pacifica, CA
Phelan, CA
Riverside, CA
San Bernardino, CA
San Diego, CA
San Francisco, CA
Santa Ana, CA
Santa Ysabel, CA
Sherman Oaks, CA
Sunnyvale, CA
Tulare, CA
Vista, CA
Colorado Springs, CO
Divide, CO
Greeley, CO
Loveland, CO
Dayville, CT
Seaford, DE
Ellenton, FL
Jacksonville, FL
Key Largo, FL
Lehigh Acres, FL
Miami Beach, FL
Naples, FL
Ocala, FL
Seffner, FL
Stuart, FL
Albany, GA
Alpharetta, GA
Atlanta, GA
Canton, GA
Dallas, GA
Dalton, GA
Hampton, GA
Leesburg, GA
Marietta, GA
McDonough, GA
Newnan, GA
Peachtree Corners, GA
Watkinsville, GA
Aiea, HI
Hanapepe, HI
Honolulu, HI
Berwyn, IL
Chicago, IL
Cicero, IL
Hazel Crest, IL
Niles, IL
Orland Park, IL
Park Forest, IL
Riverdale, IL
Rockford, IL
Round Lake, IL
South Holland, IL
Wheaton, IL
Indianapolis, IN
New Harmony, IN
Atwood, KS
Coldwater, KS
Dighton, KS
Garden City, KS
Hays, KS
Lake City, KS
Lenora, KS
Phillipsburg, KS
Smith Center, KS
Syracuse, KS
Tribune, KS
Wakeeney, KS
Holden, LA
Metairie, LA
Raceland, LA
Shreveport, LA
College Park, MD
Poolesville, MD
Lowell, MA
Plymouth, MA
Detroit, MI
Kalkaska, MI
Brainerd, MN
Elk River, MN
Rochester, MN
High Ridge, MO
Hillsboro, MO
Pomona, MO
Poplar Bluff, MO
Sikeston, MO
Wentzville, MO
Henderson, NV
Las Vegas, NV
Reno, NV
Cimarron, NM
Tijeras, NM
Bayonne, NJ
Bradley Beach, NJ
Elmwood Park, NJ
Fort Lee, NJ
Hasbrouck Heights, NJ
Hoboken, NJ
Howell, NJ
Irvington, NJ
Jackson, NJ
Jersey City, NJ
Linden, NJ
Little Ferry, NJ
Livingston, NJ
Mount Holly NJ
New Brunswick, NJ
Newark, NJ
Paterson, NJ
Ridgefield, NJ
Ridgefield Park, NJ
Short Hills, NJ
Somerville, NJ
Union City, NJ
West New York, NJ
Baldwin, NY
Bellmore, NY
Brooklyn, NY
Buffalo, NY
Chenango Forks, NY
Elma, NY
Erieville, NY
Farmingdale, NY
Farmingville, NY
Flushing, NY
Lindenhurst, NY
Massapequa, NY
Natural Bridge, NY
New York, NY
Rego Park, NY
Ronkonkoma, NY
Sherman, NY
Spring Valley, NY
Staten Island, NY
Valley Stream, NY
Vestal, NY
West Hempstead, NY
Germanton, NC
Haw River, NC
Jacksonville, NC
Kernersville, NC
Lumberton, NC
Monroe, NC
Rural Hall, NC
Amidon, ND
New Town, ND
Bluffton, OH
Euclid, OH
Toledo, OH
Boise City, OK
Felt, OK
Jenks, OK
Ponca City, OK
Ashland, OR
Portland, OR
Salem, OR
Saint Paul, OR
Adamstown, PA
Coraopolis, PA
Johnsonburg, PA
New Cumberland, PA
New Oxford, PA
Somerset, PA
State College, PA
Winfield, PA
Zelienople, PA
Aguadilla, PR
Cabo Rojo, PR
Caguas, PR
Humacao, PR
Ponce, PR
San Juan, PR
Vieques, PR
Darlington, SC
Dillon, SC
Florence, SC
Fort Mill, SC
Rock Hill, SC
Spartanburg, SC
West Columbia, SC
Gann Valley, SD
Winner, SD
Antioch, TN
Hendersonville, TN
Nashville, TN
Bellville, TX
El Paso, TX
Fort Worth, TX
Gatesville, TX
Houston, TX
Katy, TX
Killeen, TX
Lubbock, TX
Paris, TX
Realitos, TX
Red Oak, TX
San Antonio, TX
Clearfield, UT
Draper, UT
Herriman, UT
Layton, UT
Lehi, UT
Ogden, UT
Panguitch, UT
Park City, UT
Provo, UT
Saint George, UT
Salt Lake City, UT
Sandy, UT
West Valley City, UT
Blacksburg, VA
Boones Mill, VA
Chatham, VA
Danville, VA
Duffield, VA
Earlysville, VA
Hampton, VA
Meadows of Dan, VA
Portsmouth, VA
Sterling, VA
Woodbridge, VA
Chelan, WA
Kirkland, WA
Moses Lake, WA
Sammamish, WA
Sedro Woolley, WA
Neenah, WI

Source: T-Mobile