diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 70ade69..374676d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -18,7 +18,7 @@ repos:
       - id: end-of-file-fixer
       - id: trailing-whitespace
   - repo: https://github.com/pycqa/pylint
-    rev: v2.17.4
+    rev: v3.3.1
     hooks:
       - id: pylint
         name: pylint (library code)
diff --git a/.pylintrc b/.pylintrc
index f945e92..82b04fe 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -361,7 +361,8 @@ valid-metaclass-classmethod-first-arg=mcs
 [DESIGN]
 
 # Maximum number of arguments for function / method
-max-args=5
+# Changed for this library, Adafruit_CircuitPython_BLE
+max-args=9
 
 # Maximum number of attributes for a class (see R0902).
 # max-attributes=7
diff --git a/adafruit_ble/characteristics/stream.py b/adafruit_ble/characteristics/stream.py
index 5053971..1582e9d 100755
--- a/adafruit_ble/characteristics/stream.py
+++ b/adafruit_ble/characteristics/stream.py
@@ -66,7 +66,11 @@ def __init__(
         self._timeout = timeout
         self._buffer_size = buffer_size
         super().__init__(
-            uuid=uuid, properties=properties, read_perm=read_perm, write_perm=write_perm
+            uuid=uuid,
+            properties=properties,
+            read_perm=read_perm,
+            write_perm=write_perm,
+            max_length=buffer_size,
         )
 
     def bind(
@@ -104,6 +108,7 @@ def __init__(
             properties=properties,
             read_perm=Attribute.NO_ACCESS,
             write_perm=write_perm,
+            max_length=buffer_size,
         )
 
     def bind(
diff --git a/adafruit_ble/services/nordic.py b/adafruit_ble/services/nordic.py
index d4db39b..f71e761 100755
--- a/adafruit_ble/services/nordic.py
+++ b/adafruit_ble/services/nordic.py
@@ -43,12 +43,14 @@ class UARTService(Service):
     _server_tx = StreamOut(
         uuid=VendorUUID("6E400003-B5A3-F393-E0A9-E50E24DCCA9E"),
         timeout=1.0,
-        buffer_size=64,
+        # 512 is the largest negotiated MTU-3 value for all CircuitPython ports.
+        buffer_size=512,
     )
     _server_rx = StreamIn(
         uuid=VendorUUID("6E400002-B5A3-F393-E0A9-E50E24DCCA9E"),
         timeout=1.0,
-        buffer_size=64,
+        # 512 is the largest negotiated MTU-3 value for all CircuitPython ports.
+        buffer_size=512,
     )
 
     def __init__(self, service: Optional[_bleio.Service] = None) -> None:
diff --git a/adafruit_ble/services/standard/device_info.py b/adafruit_ble/services/standard/device_info.py
index 0ebd8ac..ebed6a7 100644
--- a/adafruit_ble/services/standard/device_info.py
+++ b/adafruit_ble/services/standard/device_info.py
@@ -17,10 +17,11 @@
 
 from .. import Service
 from ...uuid import StandardUUID
+from ...characteristics import StructCharacteristic
 from ...characteristics.string import FixedStringCharacteristic
 
 try:
-    from typing import Optional, TYPE_CHECKING
+    from typing import Iterable, Optional, TYPE_CHECKING
 
     if TYPE_CHECKING:
         import _bleio
@@ -42,6 +43,7 @@ class DeviceInfoService(Service):
     hardware_revision = FixedStringCharacteristic(uuid=StandardUUID(0x2A27))
     software_revision = FixedStringCharacteristic(uuid=StandardUUID(0x2A28))
     manufacturer = FixedStringCharacteristic(uuid=StandardUUID(0x2A29))
+    pnp_id = StructCharacteristic("<BHHH", uuid=StandardUUID(0x2A50))
 
     def __init__(
         self,
@@ -52,6 +54,7 @@ def __init__(
         serial_number: Optional[str] = None,
         firmware_revision: Optional[str] = None,
         hardware_revision: Optional[str] = None,
+        pnp_id: Optional[Iterable] = None,
         service: Optional[_bleio.Service] = None,
     ) -> None:
         if not service:
@@ -68,6 +71,10 @@ def __init__(
                     pass
             if firmware_revision is None:
                 firmware_revision = getattr(os.uname(), "version", None)
+            if pnp_id is None:
+                # These values are not necessarily valid according to the spec,
+                # but they work on Android and iOS.
+                pnp_id = (0x00, 0x0000, 0x0000, 0x0000)
         super().__init__(
             manufacturer=manufacturer,
             software_revision=software_revision,
@@ -75,5 +82,6 @@ def __init__(
             serial_number=serial_number,
             firmware_revision=firmware_revision,
             hardware_revision=hardware_revision,
+            pnp_id=pnp_id,
             service=service,
         )